Chilling footage of an armed robber threatening a shopkeeper with a large kitchen knife has been released by police hunting the suspect.
A member of staff was held at knifepoint at a Costcutter in Kirkdale, south-east London, while the robber demanded they hand over cash.
CCTV footage shows the robber stuffing notes into a bag at two tills before fleeing.
The Metropolitan Police have appealed for information about the robbery on March 18.
A spokesman said: “Whilst a staff member was working in the store in the early hours, the suspect entered the store and approached them with a large kitchen knife.
“The suspect pointed the blade at the 33-year-old victim and demanded money from the tills.
“The victim opened the tills before the suspect took £600 out of the tills.”
Police described the suspect as a slim black man, in his late 20s and 6ft 2in tall.
He was wearing a black hooded top with white writing on the front and back, dark blue jeans, black steel toe-capped boots and black gloves.
Detective Constable Sacha Snell, from Lewisham CID, said: “We are keen to identify the man in the CCTV footage so we can speak to him about the incident.
“We would also urge anyone who witnessed the incident or saw a man running away to contact us.”
No arrests have been made and anyone with information can contact local police by dialling 101.
They can also call Crimestoppers anonymously on 0800 555111 or tweet @MetCC with any information.