A massive nationwide search is underway for two inmates who shot and killed two Georgia correctional officers in Putnam County.

“I saw two brutally murdered corrections officers. That’s what I saw,” Putnam County Sheriff Howard Sills told reporters Tuesday afternoon. “I have their blood on my shoes.”

The FBI, the GBI and other agencies said they are offering a $60,000 reward for information leading to the capture of the men identified as Ricky Dubose and Donnie Russell Rowe.

“One of these individuals is from Madison County, Georgia,” Sills said. “We know the other one is originally from middle Tennessee.”

The deadly shootings happened about 5:45 a.m. on Ga. 16 in Putnam County, between Eatonton and Sparta, The AJC reports. This prompted officials to place all Department of Corrections facilities across the state on lockdown for the foreseeable future.

The inmates overtook the guards, who were driving a transport bus. After disarming the officers, one of the inmates shot and killed them, Sills said.

The two fugitives are still believed to be driving the 2004 green Honda Civic that was carjacked just after the killings. The tag number is RBJ6601.

The duo broke into a home in Madison, dumped their prison clothes and escaped again, according to officials.