Police officers control the scene, around of shrine of late Iranian revolutionary founder Ayatollah Khomeini, after an assault by several attackers in Tehran, just outside Tehran, Iran, Wednesday, June 7, 2017. Suicide bombers and gunmen stormed into Iran's parliament and targeted the shrine of Ayatollah Ruhollah Khomeini on Wednesday, killing a security guard and wounding several other people in rare twin attacks, with the siege at the legislature still underway. (AP Photo/Ebrahim Noroozi)

TEHRAN, Iran (AP) — Police increased their patrols in the streets and subway stations of Tehran today, a day after a pair of stunning Islamic State-claimed attacks on Iran’s parliament and the tomb of its revolutionary leader killed at least 16 people and wounded over 40.

Commuters in the Iranian capital noticed police on street corners and motorcycles, more than usual as dawn broke. That came after Mohammad Hossein Zolfaghari, a deputy Interior Minister, told state TV that “law enforcement activities may increase.”

“We are focused on intelligence” gathering, he said.

State television also reported Thursday that the death toll in the attacks had risen to 16 people killed, citing Ahmad Shojaei, the head of the country’s forensic center.

The attack Wednesday as lawmakers held a session in parliament and at the shrine of Ayatollah Ruhollah Khomeini shocked Iranians who so far had avoided the bloodshed that has followed the Islamic State group’s rise in Syria and Iraq. Iranian forces are backing embattled Syrian President Bashar Assad while the Shiite power also is supporting militias fighting against the extremists in Iraq.