Baghdad (CNN) -- A string of six explosions killed at least 22 people and wounded more than 70 in Baghdad on Wednesday, Iraq's interior ministry said.
Four blasts went off in different parts of the city one after the other.
The two deadliest were suicide car bombings that targeted police stations -- one in the Karradah neighborhood of central Baghdad, killing 14 and wounding 25, and one in northern Baghdad's Hurryia neighborhood which killed four and injured 23. A second explosion in Hurryia killed one person and wounded 12 others.
A roadside bomb in southwestern Baghdad wounded three police officers, and a bomb left in a parked car in another part of southwestern Baghdad killed three members of the public and wounded 11.
A roadside bomb near the ministry of the interior caused no casualties.
CNN's Muhaimen Mohammed contributed to this report.