A Jordanian police officer shot and killed five people at a training center in the capital Amman on Monday, with two American instructors among the victims.

The motive of the gunman, who was shot and killed, wasn’t immediately clear and no group claimed responsibility. The shootings coincided with the 10th anniversary of coordinated bombings on three hotels in Amman, carried out by al Qaeda in Iraq. Those bombings killed 60 people.

A South African was among those killed in the shooting at the Jordan International Police Training Center. Two Jordanian civilian contractors who were wounded died later, government spokesman Mohammad Momani was quoted as saying by official Petra news agency. Two American trainers and two Jordanians were injured.

The U.S. Embassy in Amman advised people to avoid the area for the time being and to await further developments.

The Americans killed were civilian contractors for a State Department training program run at the center, State Department spokesman John Kirby said. As part of the program, the State Department provides a contracted training team of approximately two dozen senior police and security advisers to aid Jordanian instructors.

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