A Rock Island man was killed in the pre-dawn hours Thursday morning when his car crashed into the Cumberland River while he was trying to elude Cookeville police.The body of the victim, Michael L. Boyd, 29, was pulled from the river by divers after his vehicle plunged into the water around 1 a.m.According to preliminary reports, a chase ensued on Interstate 40 some time after midnight as Cookeville police tried to stop Boyd’s 1991 Toyota Corolla. The reason for the attempted traffic stop and resulting chase has not been revealed.At some point during the chase, Boyd’s vehicle left the interstate and ran through a wooded area before plunging into the Cumberland River. The wreck happened near mile marker 266 near the Putnam-Smith County line.