A 56-year-old woman was found dead in her cell Saturday at Oahu Community Correctional Center.

Catherine Callahan, a pretrial detainee, was found unresponsive in her cell while corrections officers conducted routine inspections at 9:25 a.m.

Officers performed CPR until paramedics arrived. She was pronounced dead at 10:13 a.m.

Callahan’s death is believed to be the third suicide in Hawaii correctional facilities since April.

Max Otani, deputy director of corrections, said she was found hanging in her cell. Public safety officials are investigating, Otani said at a news briefing at OCCC. The medical examiner’s office will conduct an autopsy Monday.

State Sen. Will Espero, chairman of the Senate Public Safety Committee, said, "It’s very sad and unfortunate that this incident occurred."

He said of the recent prison suicides, "It makes me and others concerned because of the fact that these individuals are committing suicide within the jurisdiction of the state as incarcerated individuals."

Espero (D, Ewa Beach-Iroquois Point) said officials need to review staffing issues, risk assessments and "other factors that could be involved in their decisions and our failure to stop it."

"At this state, we have to minimize it. The frequency is too great in recent months."

Department of Public Safety spokeswoman Toni Schwartz said the woman had been on suicide watch May 2 to 7, but had been returned to the general population.

Callahan was alone in her cell, in Module 4, which was not in a special holding cell. She was sent to OCCC on March 27.

Callahan faced charges of first-degree terroristic threatening, third-degree assault and violating a temporary restraining order.

On April 29, Ikaika Andrade, 18, committed suicide by hanging while he was awaiting to be sentenced on an assault charge. A social worker found Andrade unresponsive in a holding unit at OCCC. He was alone in his cell. Corrections officers performed CPR before paramedics arrived. He was transported to the Queen’s Medical Center, where he was pronounced dead.

Andrade had admitted stabbing a fellow student at Waianae High School and pleaded no contest to second-degree assault. He faced up to five years in jail.

Otani said corrections officials are looking at policy and procedures and corrections officers are undergoing additional training. Public safety officials are also working to improve existing surveillance cameras on each of the three floors at the prison’s special holding area that include enhanced imaging. Additional cameras will also be installed on each floor of the holding area.

On April 8, Darius Puni-Mau, 22, killed himself in Halawa Correctional Facility. Several months earlier, he escaped from state custody while at Circuit Court for a probation revocation hearing.

A determination of the manner of death of Max Davis Jr., 25, who was found dead at OCCC on May 7, remains pending. Davis was found dead in his cell by health workers making their rounds. He was alone at the time of his death.

Davis was at the prison awaiting trial for assaulting a mental health worker at the Kaneohe state hospital. He was committed to the hospital after he was acquitted in 2005 of the murder and rape of a 6-year-old girl by reason of insanity.

Star-Advertiser reporter Leila Fujimori contributed to this report.