A suicide bomber struck a crowd of Shiite worshippers packing a Kabul mosque to mark the holy day of Ashoura, killing about 60 and wounding 160, while a second bombing in the northern city of Mazar-i-Sharif killed four more Shiites and wounded about 20 more. They were the first major sectarian assaults since the fall of the Taliban a decade ago. Afghanistan has a history of tension and violence between majority Sunnis and the Shiite minority, but while such attacks have become commonplace in neighboring Pakistan and parts of the Middle East such as Iraq, they had not previously occurred in Afghanistan.