DENISON, Iowa (AP) – Authorities say a 20-year-old man convicted last week of killing two elderly people in Deloit has tried to escape the Crawford County Jail.

The Crawford County Sheriff’s Office says Jayden Chapman assaulted a jailer on Monday while trying to flee.

Chapman faces two life terms for the slayings of 80-year-old Marvin Huesling and 81-year-old Alice Huisenga in Deloit. Authorities say Chapman and Michael Schenk shot the pair in March 2014 at a trailer home and then set it on fire. Schenk was sentenced in March to two life terms for his role in the slayings.

The new charges facing Chapman are assaulting a jailer and attempting to escape.