The prime minister was forced to defend himself in a remarkable security breach this afternoon after a man ran towards him.
The incident occurred as David Cameron was walking out of Leeds Civil Hall, where he was announcing government plans for a third high-speed rail line in the UK, HS3.
The footage, obtained by ITV, appears to show that the prime minister's security team was unaware of any imminent threats.
Initial reports suggested that the man was a protester but a police spokesman said he was simply running to the gym.
A West Yorkshire Police spokesman said: "No threats were made, and after the man's details were checked, he was de-arrested and allowed on his way."
The man was only arrested for a short period while the police were checking the man's information.
Cameron didn't appear to look particularly shocked by the incident and instead played it down before being helped into a car by his security detail.
Dean Balboa Farley, who bumped into the prime minister, has updated his Facebook status to talk about the incident.
