Police in the US state of Michigan on Wednesday were investigating a car bomb explosion that seriously wounded three people, a local television station reported.
Detroit's WXYZ news said the car bomb was detonated at 5:41 pm (2141 GMT) on Tuesday in the town of Monroe south of Detroit, seriously wounding a man and two minors.
It showed footage of the torched shell of a vehicle, with local police and federal agents from the Bureau of Alcohol, Tobacco and Firearms (ATF) collecting evidence.
It quoted a Monroe County Sheriff's Deputy as saying that a criminal investigation had been launched and a press conference would be held later on Wednesday.
The sheriff's office could not immediately be reached for comment.