Police increase patrols in Tehran following attacks that killed at least 13

More than 40 others were wounded in the attacks which have been claimed by the Islamic State.

Five of the men who launched an attack in the heart of Iran's capital that killed at least 13 people previously fought for Islamic State, the country's intelligence ministry has said.

Police have increased their patrols in the streets and subway stations of Tehran following the attacks on Iran's parliament and the tomb of its revolutionary leader.