Several people were reportedly hurt when six devices were detonated across the city.
A seventh was recovered before it exploded, a police source told Reuters.
One of the blasts targeted a skytrain commuter station, while others were reported at a government complex and beside a main road.
The explosions were reported at about 9am local time ahead of a meeting of foreign ministers including the UK’s new foreign minister Dominic Raab and US secretary of state Mike Pompeo.
The Guardian reports two suspects have been arrested in connection with the incidents.
