The U.K.’s Maritime Trade Operations Centre said it was investigating reports of multiple casualties after projectiles struck a tanker north of Qatar. Wednesday’s attack came after Iranian officials warned they would close shipping routes used to bypass Iran’s naval blockade of the Strait of Hormuz. At least nine vessels came under attack last week while navigating the strait — the highest number in any week since the U.S. and Israel attacked Iran in late February. Meanwhile, oil prices rose more than 2% today amid attacks on energy infrastructure across Ukraine and the Middle East.