Celina Cass Missing: Two Rewards Totaling $30K Announced. Facebook

The search for Celina Cass, the 11-year-old New Hampshire girl who is missing since July 25, has been ramped up, with two rewards totaling $30,000 offered for any information leading to the girl's whereabouts.

The FBI on Saturday announced that it would offer a reward of $25,000 for any information that would help to find Cass, and would lead to the detention and prosecution of anyone responsible for her disappearance.

Celina Cass Missing: Two Rewards Totaling $30K Announced. Facebook

The search for the 5 feet 5 inches tall fifth grader has been on since Monday night. It started from her Stewartstown, N.H. home, a place not far from the Canadian border, Reuters reported.

According to authorities, Cass has long brown hair and hazel eyes and was wearing a pink shirt, pink pullover and blue shorts before she went missing. She was last seen at her home playing on her computer at around nine p.m. local time.

Adding to the $25,000 reward from FBI, one member of the community also offers another reward of $5,000 for any information, New Hampshire senior assistant attorney general Jane Young said at a press conference.

search for the 5 feet 5 inches tall fifth grader has been on since Monday night. It started from her Stewartstown, New Hampshire home, a place not far from the Canadian border. Facebook
Celina Cass Missing: Two Rewards Totaling $30K Announced. Facebook

Young also said that dive teams will search surrounding bodies of water as well. He stressed that the searching is not necessarily for a body, rather to try every possible means to find the missing girl. The Authorities are also asking for the public's vigilance.

Stepfather, Wendell Noyes. Facebook

Meanwhile, police have learned from the missing girl's computer that her stepfather, Wendell Noyes, has been previously charged with criminal behavior and has a history of mental illness.

Noyes, 47, was diagnosed with schizophrenia in 2003 and was arrested for threatening an ex-girlfriend, Dailymail reported.

As per the court records obtained by ABC, the woman said Noyes entered her home while she and her two children were sleeping. Noyes picked up her mattress and smashed it down.

It was ruled that Noyes was not able to stand trial and his mental illness created "a potentially serious likelihood of danger to himself and others."