A northeastern Pennsylvania man froze to death after spending the night in his car in single-digit weather, authorities said.

Police in Carbon County said Alan Kurtz, 49, of Lansford, was found by his wife outside their home about 9:30 a.m. Saturday.

Detective Jack Soberick of the Lansford Police Department said Kurtz was using a coat and a blanket in the car Friday night. Kurtz was rushed to St. Luke’s Miners Memorial Hospital in Coaldale and doctors worked for five hours to try to get his core temperature up, but he was pronounced dead at 3:08 p.m. Saturday.

An autopsy is pending and the death remains under investigation, police said