Celina Cass
Celina Cass, age 11, was last seen the night of July 25 in her New Hampshire home. Europaplustv

Monday, a week-long search ended when the body of a missing 11-year-old girl, Celina Cass, was found in the Connecticut River near her home.

Law enforcement officials said the girl's death was considered "suspicious." It is not made clear as to what investigators had seen.

The death of Celina Cass was now treated as a criminal investigation after it was determined that her body was placed in the river, said Jane Young, New Hampshire Assistant Attorney General. An autopsy on the body is scheduled for Tuesday.

"We have brought Celina home," she added, "but not the way we wanted to bring her home."

According to Young, Celina's body was discovered by New Hampshire Fish and Game divers at around 10:30 a.m. today in the river, just a quarter of a mile from her home in West Stewartstown. The body was recovered from the river in the late afternoon.

The New Hampshire girl was last seen last Monday in front of her computer in her room, around 9 p.m. and was missing when her parents went to wake her up the next morning.

The FBI joined the search the missing girl last week, offering a $25,000 reward for information leading to her whereabouts or an arrest in connection with her disappearance.