Authorities in southern Michigan have searched through rubble and debris in the aftermath of suspected tornadoes that killed four people during powerful storms also blamed for two deaths in Oklahoma. First responders were in the Union Lake area Saturday looking for more possible victims and clearing debris. Authorities say three people were killed and 12 were injured during Friday's storms in the Union Lake area. The National Weather Service has confirmed a strong tornado there. Officials say suspected tornadoes also killed a 12-year-old boy in Cass County, Michigan, and two people in eastern Oklahoma. Tornado confirmation is pending in those areas.