Updated

The latest on the bombings in the Thai capital (all times local):

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1:15 p.m.

New surveillance video has surfaced in Thailand offering a possible clue to Monday's bombing in downtown Bangkok that took 20 lives.

Video leaked to Thai media shows a man in a blue shirt placing a bag on a riverside walkway, then kicking it into the water on Monday night shortly after the explosion several kilometers (miles) away at the Erawan shrine.

At about 1 p.m. Tuesday, an explosion took place in the water canal near a busy pier without hurting anyone.

Police spokesman Prawuth Thawornsiri said Saturday that police are seeking the man for questioning, even though it remains unclear if his actions had anything to do with either explosion.