Explosion on major Istanbul avenue kills 4; cause unclear

              Police vehicles and ambulances are parked at the site of an explosion on Istanbul's popular pedestrian Istiklal Avenue in Istanbul, Turkey, Sunday, Nov. 13, 2022. Istanbul Gov. Ali Yerlikaya tweeted that the explosion occurred at about 4:20 p.m. (1320 GMT) and that there were deaths and injuries, but he did not say how many. The cause of the explosion was not clear. (AP Photo/Francisco Seco)