Derrick Coleman has been suspended indefinitely by the Seattle Seahawks pending investigation on charges of vehicular assault and hit-and-run.

Bellevue police chief Steve Mylett told reporters that the officers performed a sobriety test and blood tests on Coleman.

"There was enough evidence there to lead us to suspect that perhaps drugs or alcohol could have been involved," Mylett said.

The incident occurred at 6:20 p.m. Wednesday when Coleman's pickup hit the back of a Honda Civic.

The collision caused the Civic to turn upside down, and the truck was turned on its side, Mylett said.

The driver of the Civic suffered injuries that were serious but not life-threatening.

Coleman fled the scene and was found by police two blocks away.

Derrick Fox and Mark Bloom, Coleman's agents, released a statement that indicated Coleman might have fallen asleep at the wheel.

"On the evening of October 15, 2015, Seattle Seahawk Fullback Derrick Coleman, Jr. was involved in a two-car collision soon after leaving a team meeting. While the facts of the case are still being determined, it seems Derrick may have fallen asleep while driving home from a Seahawks' facility.

"The health and well-being of all involved is our primary concern, and we are thankful to report that both parties are expected to make a full recovery. We will continue to work closely with the local officials while a full investigation is being conducted."