Gunmen attacked the Iranian parliament on Wednesday morning, killing a guard and wounding several people, state media reported.

MOSCOW (Sputnik) — An unknown male assailant fired several rounds at the guards protecting the parliament building in Tehran, wounding seven in the hallway on Wednesday morning, FarsNews reports.

#BreakingNews: Three attackers inside #Iran 's Parliament; 2 injured so far; fire exchanges continue — Tasnim News Agency (@Tasnimnews_EN) June 7, 2017

According to initial reports, the assailant opened his way into the parliament building while shooting at the guards, leading to the injury of one of the IRGC guards and six civilians.

​Hostage situation was reported inside the Iranian parliament amid the shooting.

First video emerges of the aftermath of Iran Parliament shooting incident#IranParliament pic.twitter.com/04WTu9PrnV — Press TV (@PressTV) June 7, 2017

​"Reports said some people held hostage in #Iran 's parliament; fire exchanges going on," the Tasnim news service said on its Twitter account.

#BREAKING: Reports said some people held hostage in #Iran 's parliament; fire exchanges going on — Tasnim News Agency (@Tasnimnews_EN) June 7, 2017

A gunman claimed to be a suicide bomber has been surrounded by security forces inside the Iranian parliament complex, where lawmakers are carrying out a session, Iranian media reported Wednesday.

#BREAKING

Injured police officer received by ambulance outside #Iran Parliament where armed men have opened fire. pic.twitter.com/9VsWLqaGOL — Mehr News Agency (@MehrnewsCom) June 7, 2017

"One of gunmen inside Parliament is a suicide bomber, currently surrounded by security forces," the Mehr news service said on its Twitter account.

It added later that the parliament session was "going on normally, broadcast live on national radio, despite gunmen attack."

​Meanwhile, Iranian state news agency Tasnim reports, that at least 7 people were killed in the shooting and 4 are being held hostages.