Finsbury Park terror attack: Prime suspect is 48-year-old man

London - A 48-year-old man has been arrested by police and the Metropolitan Police said the investigation is being carried out by the Counter Terrorism Command.

British Prime Minister Theresa May, who said the incident was being treated as a "potential terrorist attack", will hold a meeting of the Government's emergency Cobra committee today.

Deputy Met Assistant Commissioner Neil Basu, senior national co-ordinator for Counter-Terrorism Policing, is giving a statement. He says it is too early to tell whether the van who died at the scene was killed in the attack. Eight others were taken to hospital. Two were treated at the scene. All of the victims were Muslim.

The driver of the van has been arrested on suspicion of murder, Basu said.

Video posted online showed a scene of chaos as people tried to help the injured. One man could been seen giving CPR to a victim in the street while another man's head injury was treated with a makeshift dressing.

People could be heard shouting and screaming amid the chaos and bloodstains were visible on the pavement. In one video, a group of men are seen holding the suspect to the ground as they call for the police.

In a statement Monday, London Mayor Sadiq Khan called the incident a "horrific terror attack."

"We don't yet know the full details, but this was clearly a deliberate attack on innocent Londoners, many of whom were finishing prayers during the holy month of Ramadan," Khan said.

Eight people were taken to hospital and two more were treated for minor injuries at the scene. Those hit and reportedly been helping an elderly worshipper who had fallen down on the pavement.