Iraqi officials have arrested a man wanted by Australian Federal Police as a person of interest in the investigation into a spate of firebombings, including an antisemitic attack on a Melbourne synagogue, police said on Wednesday.Australian Federal Police Commissioner Krissy Barrett said the arrested man, Kazem Hamad, was a threat to national security and that she had identified him as her “Number One priority”.For all the latest headlines follow our Google News channel online or via the app.Iraq’s National Center for International Judicial Cooperation said in a statement that Kadhim Malik Hamad Rabah al-Hajami had been arrested as part of a drugs investigation, after a request from Australia.Barrett said Iraqi officials had made an independent decision to arrest the man in their own criminal investigation, after Australian Federal Police provided information to Iraqi law enforcement late last year.“This arrest is a significant disruption to an alleged serious criminal and his