This is the moment a man suspected of strangling a grandmother to death with a lawnmower cord is arrested by armed police - after hiding out in a library.

Allotment owner Lea Adri-Soejoko, 80, was found dead with her wrists tied inside a padlocked communal maintenance shed.

SEE ALSO: Second man arrested after grandmother found dead in allotment lock-up

"Violent" suspect Mubarick Duat, 37, was arrested by officers at around 5.30pm on Wednesday after a nationwide manhunt.

Undercover cops swooped on John Harvard Library in Southwark, south London just before 5pm and dragged the fugitive outside, a witness said.