A gunman has killed at least seven people in an overnight house-to-house rampage in a small Missouri town before apparently taking his own life.

The victims have been found in four homes in Tyrone in the Bible belt.

Sergeant Jeff Kinder says the suspected gunman has taken his own life.

"A 36 year old male from Tyrone was found dead in a vehicle from an apparent self-inflicted gunshot wound."

No motive has been put forward for the killings, nor has it been stated whether the gunman and the victims were connected.