Swedish Foreign Minister Margot Wallstrom called on Tuesday for an investigation to determine whether Israel was guilty of extrajudicial killings of Palestinians during recent violence there, local media reported.<br />The comments were the latest in a series of statements by Wallstrom that have irked Israeli authorities.<br />Ties between Sweden and Israel nose-dived when Sweden recognized the Palestinian state shortly after Wallstrom's center-left Social Democrats won a parliamentary election in 2014.<br />The rift then deepened further when she described the Palestinians' plight as a factor leading to Islamist radicalization.<br />"It is vital that there is a thorough, credible investigation into these deaths in order to clarify and bring about possible accountability," Wallstrom said during a parliamentary debate, according to news agency TT.