NH student's disappearance, death detailed in docs

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FILE - In this Oct. 15, 2012 file photo, the New Hampshire Marine Patrol searches the Piscataqua River near a cliff on Pierce Island for the body Elizabeth "Lizzy" Marriott. Her body was not found. The death of 19-year-old Marriott, according to court documents unsealed in May 2013, shows a tangled tale involving a karate instructor, his girlfriend, and a young victim described by a family member as gullible. (AP Photo/Jim Cole, File)

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NH student's dis... FILE - In this Oct. 15, 2012 file photo, the New Hampshire Marine Patrol searches the Piscataqua River near a cliff on Pierce Island for the body Elizabeth "Lizzy" Marriott. Her body was not found. The death of 19-year-old Marriott, according to court documents unsealed in May 2013, shows a tangled tale involving a karate instructor, his girlfriend, and a young victim described by a family member as gullible. (AP Photo/Jim Cole, File)
San Antonio floo... A kayaker pulls a raft with children around a flooded baseball park in San Antonio, Saturday, May 25, 2013, in San Antonio. San Antonio International Airport recorded more than nine inches of rain since midnight. (AP Photo/Eric Gay)
Mo. highway buck... Emergency personnel respond to the scene of a train derailment near Rockview, Mo. on Saturday, May 25, 2013. The National Transportation Safety Board has launched an investigation into the cause of a cargo train collision that partially collapsed a highway overpass in southeast Missouri, injuring seven people. (AP Photo/The Southeast Missourian, Fred Lynch)
NTSB: Bridge col... Workers walk past the collapsed portion of the Interstate 5 bridge at the Skagit River Friday, May 24, 2013, in Mount Vernon, Wash. A truck carrying an oversize load struck the four-lane bridge on the major thoroughfare between Seattle and Canada, sending a section of the span and two vehicles into the Skagit River below Thursday evening. All three occupants suffered only minor injuries. (AP Photo/Elaine Thompson)
Thousands of bri... In this photo provided by Francisco Rodriguez, Bryce Kenning sits atop his car that fell into the Skagit River after the collapse of the Interstate 5 bridge there minutes earlier Thursday, May 23, 2013, in Mount Vernon, Wash. (AP Photo/Francisco Rodriguez)
LA stoplights sy... In this Wednesday, April 24, 2013 photo, transportation engineer associate Abeer Kliefe works at the Los Angeles Department of Transportation's Automated Traffic Surveillance and Control Center in downtown Los Angeles. The nation's most congested city has become a model for traffic control. With the flip of a switch earlier this year, Los Angeles became a worldwide leader by synchronizing all of its nearly 4,400 stoplights, making it the world's first major city to do so. (AP Photo/Reed Saxon)
Graduates in tor... Southmoore High School senior Jake Spradling, hugs a classmate as they get ready to attend their commencement ceremony in Oklahoma City Saturday, May 25, 2013, five days after a tornado destroyed a large swath of their attendance area in Moore, Okla. Spradling's home was among those destroyed after a huge tornado roared through the Oklahoma City suburb Monday, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Giffords, husban... Former U.S. Rep. Gabrielle Giffords and her husband, retired space shuttle Commander Mark Kelly, background right, acknowledge the crowd after delivering the commencement address in two parts, during the 153rd Commencement at Bard College, Saturday, May 25, 2013, in Annandale-on-Hudson, N.Y. Giffords also received an honorary degree. (AP Photo/Philip Kamrass)
Girl's suicide a... Sheila Pott poses with a portrait of her daughter Audrie in Los Altos, Calif., Thursday, May 23, 2013. Audrie Pott committed suicide in September 2012 after being sexually assaulted by three boys during a house party in Saratoga, Calif. Photos of the incident were circulated around Pott's high school prompting the teenager to hang herself in a bathroom at home. (AP Photo/Marcio Jose Sanchez)
Ohio doctor char... In this May 1, 2013 photo, Lori Ballman holds a tribute to her late daughter, Deanna, at her home in Pataskala, Ohio. Dr. Ali Salim was arrested in February 2013, and charged with kidnapping, raping and killing Ballman in July or August 2012, by injecting her with heroin, as well as killing her unborn child. (AP Photo/Andrew Welsh-Huggins)
Museum starts ni... A tourist takes a photo at the Neon Museum in Las Vegas on Friday, May 24, 2013. For the past six months, visitors have had to squint up at the hulking metal forms through the desert sun. On Friday, the museum unveiled nighttime hours. (AP Photo/Julie Jacobson)
Thousands walk, ... Rachel, left, and Pam Vingsness of Newton, Mass., hug each other after crossing the finish line as runners who were unable to finish the Boston Marathon on April 15 because of the bombings were allowed to finish the last mile of the race in Boston, Saturday, May 25, 2013. (AP Photo/Winslow Townson)
Tornado upon the... In this Wednesday, May 22, 2013 photo, Cindy Sasnett clings to a porcelain Christmas angel decoration she recovered from her destroyed home as she stands in one of the rooms she almost took refuge in from Monday's tornado, in Moore, Okla. (AP Photo/Tony Gutierrez)
Judge: Ariz. she... FILE - This Jan. 9, 2013 file photo shows Maricopa County Sheriff Joe Arpaio speaking with the media in Phoenix. A federal judge ruled Friday, May 24, 2013, Arpaio's office systematically singled out Hispanics in its trademark immigration patrols, marking the first finding by a court that the agency racially profiles people. (AP Photo/Ross D. Franklin, File)
Jury foreman say... Jodi Arias stands as the jury is excused after the verdict for sentencing was declared a hung jury for her first degree murder conviction at Maricopa County Superior Court in Phoenix, Ariz., on Thursday, May 23, 2013. (AP Photo/The Arizona Republic, David Wallace, Pool)
Dead Pa. baby's ... FILE - This undated file photo combination provided by the Philadelphia Police Department shows Herbert and Catherine Schaible. At a bail hearing Friday, May 24, 2013, a Philadelphia judge ordered the couple, who believe in faith healing over medicine, be held without bail on third-degree murder charges in the April death of their 8-month-old son, Brandon. They previously had been convicted of involuntary manslaughter after another child, 2-year-old Kent, died in 2009. (AP Photo/Philadelphia Police Department, File)
Principal recoun... A man walks in the rubble of the Plaza Towers elementary school in Moore, Okla., Friday, May 24, 2013. (AP Photo/Sue Ogrocki)
Calif. plastic o... File - In this Aug. 11, 2009 file photo provided by the Scripps Institution of Oceanography shows Matt Durham, center, pulling in a large patch of sea garbage with the help of Miriam Goldstein, right, in the Pacific Ocean. Plastics discarded by people often end up in the ocean, creating coastal pollution that harms marine life and gathers out at sea in what's become known as the great Pacific garbage patch. Now, California state lawmakers have introduced a law that if passed would require makers of plastic bottles, bags and packaging to replace plastics with more environmentally friendly alternatives. (AP Photo/ Scripps Institution of Oceanography, Mario Aguilera, File)
Suspect in killi... Weber County Sheriff Terry Thompson, from left, Weber County Attorney Dee Smith, Greg Whinham, Roy City, Chief of Police and Mike Ashment, Ogden Chief of Police, appear after a news conference Friday, May 24, 2013, in Ogden, Utah. Matthew David Stewart, a Utah Army veteran charged with killing a police officer and wounding five others in a shootout during a marijuana raid was found Friday hanging dead in his cell, authorities said. Stewart, 39, was found hanging from a bed sheet during a routine cell check just before 1 a.m., Weber County Attorney Dee Smith said. The county has referred the investigation into the death to an outside agency, and another county attorney will review it. (AP Photo/Rick Bowmer)