Elizabeth Marriott: Police eye second arrest in case of N.H. student, report says

(CBS) DOVER, N.H. - Officials say a second person may be arrested in connection with the case of 19-year-old Elizabeth Marriott, a University of New Hampshire student believed to have been killed a week ago.

Pictures: University of N.H. student Elizabeth Marriott missing

Police are investigating claims that Marriott may have suffered a suffocation death during a sexual encounter with 29-year-old Seth Mazzaglia and another woman, CBS Boston reports.

Marriott was last seen on Oct. 9 after attending an evening class in Dover. Mazzaglia was charged Saturday with second-degree murder. He is accused of killing Marriott in his apartment that night.

A law enforcement official who spoke under condition of anonymity on Tuesday said that additional arrests should be expected, the Portsmouth Herald reported.

But Associate Attorney General Jane Young said Wednesday that authorities do not have enough evidence to charge a second person in connection with Marriott's death, according to the Herald.

"We bring a charge when there's evidence," Young said. "What I maintain in this case, is if the evidence brings us to the fact that another person was or other persons were involved then other charges would be brought."

Marriott's body has not been found, but authorities have been searching the waters around Peirce Island in nearby Portsmouth in hopes of finding her.

Complete coverage of Elizabeth Marriott on Crimesider