CHESTER COUNTY, Pa. (WTAJ) — The Chester County District Attorney’s Office provided an update Monday afternoon on the manhunt for a convicted murderer who escaped a suburban Philadelphia prison.

District Attorney Deb Ryan along with state police held a press conference at 1 p.m. to talk about the ongoing search for Danelo Cavalcante, 34. He was sentenced to life in prison last month for killing his ex-girlfriend in front of her children.

At the time of the conference, Cavalcante was still on the run.

Cavalcante escaped from the Chester State Prison on Thursday morning as he was waiting to be transferred to a state prison.

The DA’s office said hundreds of law enforcement officers have been working around the clock to find Cavalcante. Helicopters, drones and K-9 units are being used to find him. Pennsylvania State Police has taken over the lead role in the search for Cavalcante.

The most recent credible surveillance footage of Cavalcante was Saturday afternoon which added to the total of four sightings, according to the DA. There is a reward of up to $10,000 for information that leads to his arrest.

The press conference was live-streamed on the Chester County District Attorney’s Office Facebook page.

The Associated Press contributed to this report.