GRAND RAPIDS, Michigan - A frantic manhunt is under way for a suspect in seven fatal shootings in the Midwestern state of Michigan.

A vehicle believed to be driven by the suspect has led police on a high-speed chase that tore through the city's downtown. Officers with guns drawn are searching the trunks of cars passing through a residential neighborhood where he may be hiding.

Witnesses tell WOOD-TV that shots were fired from the vehicle during the chase and may have struck a bystander.

The manhunt began after four people were found dead in one Grand Rapids home and three were found in another across town. Mayor George Heartwell says police are seeking 34-year-old Rodrick Shonte Dantzler.

The mayor couldn't confirm a motive behind the shootings or Dantzler's relationship to the victims.