A man who is accused of killing a Pennsylvania state trooper is still on the loose, but there might be a major break in the investigation to find and locate him.

According to Fox News, blood was found on the property of Joyce Aleckna, a resident of Canadensis, Pennsylvania. The blood was found near a chicken coop on Aleckna’s farm, but Aleckna has said that none of her animals have been injured recently, eliminating the possibility that the blood could belong to one of her animals.

After finding the blood on Saturday, Aleckna contacted the local authorities, and they are now going to test the blood samples to see if the blood belongs to Eric Frein, the man believed to be responsible for the death of a Pennsylvania state trooper last month. Frein is accused of shooting up the Blooming Grove state police barracks on September 12th, killing one trooper and seriously injuring another.

Police have been looking for Frein for the last six weeks. They have searched near the residents of his parents’ home in Canadensis, and they are also looking near a local high school that Frein once attended. Frein has been spotted several times since the shooting, but authorities have been unable to detain him.

This will be the third blood sample used to test to see if it belongs to Frein. The previous two samples proved to not belong to the suspected cop killer.

Frein is known as a trained survivalist. Survivalist are people who constantly prepare for any type of emergencies that could possibly happen. If guilty of the crime he is accused of, it is unknown as to why he opened fire on the barracks in the first place.