Fairbanks man faces life in jail

A 23-year-old man already facing felony assault charges tied to an incident involving his 18-month-old son, could now spend the remainder of his life in jail for the alleged sexual abuse of the child.

Jonathan Gustafson has been in jail on a third degree assault charge since late last month.

Last week, a grand jury indicted him on more serious charges of first degree sexual assault, sexual abuse of a minor in the first degree, and evidence tampering.

Authorities say Gustafson injured his son back in late July 2011, then allegedly tried to conceal the crime by lying to medical personnel and police about what had happened.

During an arraignment hearing in state court this afternoon, Gustafson pled not guilty to all charges.