A series of explosions Thursday on three parked buses has rattled central Israel in what authorities suspected was a militant attack. No injuries were reported. The explosions happened on a day when Israel was already grieving after Hamas returned the bodies of four hostages from Gaza as part of a ceasefire deal. The bus explosions were reminiscent of bombings during the Palestinian uprising of the 2000s, but such attacks are now rare.

Explosives were found on two other buses but did not detonate, police spokesman Asi Aharoni told Channel 13 TV. Israeli police said the five bombs were identical and equipped with timers, and said bomb squads were defusing the unexploded bombs. Investigators in white coveralls searched for evidence inside the burned-out metal shells of the buses, which blew up in a parking lot in Bat Yam, a city outside Tel Aviv.