A preliminary hearing for a Pike County Illinois murder suspect is continued to August 12.

Twenty-eight-year-old Joseph Coffman of Fort McDowell Arizona is charged with murder in the stabbing death of his half-brother, 47-year-old Dennis Coffman of Hannibal.

The incident allegedly took place early July 19 as the two men were driving along a stretch of Interstate 72 near the Hull exit just east of the Mark Twain Bridge at Hannibal.

Coffman remains in the Pike County Jail at Pittsfield without bond.