Two armed robbers dressed in burkas raided a pawnbrokers in Brixton today.

The men threatened staff with a firearm and stole cash in the robbery in Brixton Station Road at 9.15am.

Officers pursued the suspects on foot after a member of the public alerted police, Scotland Yard said.

A Brixton shop worker, who wished to remain anonymous, said: "It was two men in burkas, the full Muslim wear.

"When they came out, you could tell they were men under the burkas by the way they walked, even though only their eyes were visible."

Witnesses said the men casually strolled through Brixton Station Road after carrying out the robbery.

However, a member of the public reportedly followed them while speaking to police over the phone.

The shop worker said: "They thought nobody knew they were robbing so they just walked out like nothing had happened.

"They casually walked through Brixton carrying shopping bags, they were so calm and collected, it was like a film."

Officers recovered a firearm after arresting two men in Brixton Road.

A Met Police spokesman said they were being held at a south London police station on suspicion of robbery.