BANGOR (AP) — A neuropsychologist has testified that a confession from a man accused of killing a 16-year-old girl more than three decades ago in Maine isn’t credible.

Dr. Robert Riley took the stand Wednesday in the trial of 57-year-old Phillip Scott Fournier, who faces a murder charge in the 1980 killing of Joyce McLain in East Millinocket.

Riley said Fournier suffered a severe brain injury during the crash he was involved in on the night of McLain’s killing. Riley testified that the injury has affected Fournier’s memory, causing him to rely on others for information. According to Riley, information Fournier confessed could be false memories.

Witnesses also testified about other possible suspects.

Prosecutors maintain Fournier confessed to killing McLain.

Fournier could face life in prison if convicted.

Philip Scott Fournierhas pleaded not guilty in the 1980 slaying of Joyce McLain in this 2016 photo.  (Press Herald File Photo/Kevin Bennett)