The Islamic State group has claimed responsibility for a bomb attack in eastern Saudi Arabia that officials say wounded an officer on patrol.

Police said early Friday that the attack caused a "minor injury" to the police officer. It took place on Thursday night in the country's predominantly Shiite east. Five vehicles were damaged.

A post on a website known to be used by Islamic State sympathizers claimed the attack and said militants carried out other assaults in the area. The police's statement, carried by the state-run Saudi Press Agency, did not mention any other attack.

An Islamic State affiliate in Saudi Arabia has claimed a series of attacks and suicide bombings. Eastern Saudi Arabia also has been tense since the kingdom executed a prominent Shiite cleric in January.