Detectives investigating the death of a pensioner after her flat was burgled have released CCTV images of two young boys on bikes who could hold the key to finding her killers.
Maureen Whale, 77, died at her home in Barnet from heart disease which the coroner said was brought on by stress. Police are treating her death as manslaughter.
Officers said the boys on bikes in the CCTV are not in any trouble but are "potentially really important witnesses".
An image of a missing small brown wallet, also released on Tuesday, shows it was used by Ms Whale earlier in the day while out shopping.
Officers will be in Barnet to hand out leaflets and speak to passers-by and drivers between 4.15pm and 6.15pm, to appeal for more witnesses and information.
In a joint statement, Ms Whale's nephew Lawrence and her niece Gina said: