VIENNA (Reuters) - Austrian police made 30 arrests in more than 60 raids on Monday as part of an anti-terrorism operation, but there was no link to a deadly attack in Vienna a week ago in which a convicted jihadist killed four people, prosecutors said. Austria has formally remanded in custody 10 suspects in connection with the attack by a 20-year-old gunman who had previously been convicted of trying to join Islamic State in Syria. Police shot him dead minutes after he opened fire on bars and bystanders in central Vienna. Monday’s raids on apartments, houses, businesses and association premises in four Austrian provinces targeted people suspected of belonging to or supporting the Palestinian Islamist movement Hamas and the Muslim Brotherhood, the prosecutors’ office in the southern city of Graz said.