The man accused by prosecutors of being the East Coast Rapist is scheduled to make a court appearance as questions have been raised about his competency to stand trial.

Authorities believe 40-year-old Aaron Thomas is responsible for rapes and other attacks on 17 women from Virginia to Connecticut over the span of a decade. He faces up to life in prison if convicted of the most recent attack — the Halloween 2009 abduction of three teenage trick-or-treaters in Woodbridge, Va. Two were raped before Thomas was forced to flee.

The hearing scheduled for Thursday morning was initially docketed for last month but was postponed after Thomas' court-appointed attorney, Ronald Fahy, sought a mental evaluation. He said Thomas has engaged in self-destructive behavior and refuses to communicate with him.