Australia’s foreign minister said Thursday that his government was notified through Australian security channels of the arrest of an Australian-Israeli citizen in Israel in 2010 on serious security charges months before the man died in prison.

Israel acknowledged for the first time Wednesday that it held the Australia-born dual Israeli citizen under a false name for security reasons and that he died in prison more than two years ago — details that shed new light on a case that has strained relations with its close ally Australia and raised questions about its secretive Mossad agency.