lamic state has claimed responsibility for the attack at London's Houses of Parliament. The militant group's news agency saying it was behind Wednesday's incident. Four people were killed, including the assailant and a policeman, and 40 injured. 7 are still believed to be in a critical condition in hospital.
In a statement, IS said the perpetrator was an Islamic State soldier responding to calls to target citizens of the countries fighting the group. British Prime Minister Teresa May revealing the attacker was British-born and was once investigated by MI5 intelligence agents over concerns about violent extremism. May added that the lone-wolf attack was inspired by a warped Islamist ideology.
The militant group has controlled parts of Iraq and Syria in recent years. In the last few months, it's lost territory to local forces in those countries supported by a US led military coalition.