The Islamic state group (ISIS) claimed responsibility Thursday for a terror attack outside the UK Parliament which left three people dead and 29 injured. In a statement, a spokesperson for the group said that the perpetrator was "a soldier of the Islamic state."More details emerged Thursday morning about the man who carried out the attack on Wednesday. Prime Minister Theresa May confirmed the suspect was a British citizen who was known to the intelligence services, but said he was not thought to be a serious threat.As the investigation into the attack continues, police confirmed that they carried out raids on houses in London and Birmingham overnight, arresting eight people in connection with the incident.Continue reading on VICE News