Iran’s Islamic Revolutionary Guard Corps (IRGC) attacked a Singapore-flagged commercial vessel in the Strait of Hormuz Thursday evening, a U.S. official confirmed to CBS News. 

The attack came despite a Memorandum of Understanding (MOU) having been signed last week by the U.S. and Iran to end the fighting and reopen the shipping lane.

It also came just hours after the Iranian military warned that ships crossing the Strait of Hormuz require their authorization. Those that don't comply, it said, "will be dealt with." 

The bridge of the vessel suffered damages but no one was injured, according to the U.K. Maritime Trade Operations, which receives and tracks reports of suspicious activity from all vessels in the Gulf region.

The ship continued on its journey following the strike.