MONTGOMERY COUNTY, Texas (KTRK) -- The search for a suspect driver is underway after a man was killed in a hit-and-run crash on Tuesday morning in Montgomery County, authorities said.

The Montgomery County Sheriff's Office said deputies responded at about 3:45 a.m. to a report of an unresponsive man lying along the road after being hit by a vehicle near FM 1485 at Willaby Road.

Officials said the man, whose identity was not revealed, was pronounced dead at the scene.