Drones carrying large amounts of drugs and mobile phones have been intercepted by police as they were being flown near a north London jail.
One device crashed after it was tracked flying over HMP Pentonville on 14 August, while another drone was seized mid-flight later the same day.
On 13 August, a man was spotted by officers acting suspiciously near the prison. He fled but dropped two bags of class B drugs and phones.
No arrests have been made.
Officials said the drones “carried a substantial amount of class B drugs, legal highs and a large quantity of mobile phones”.
The devices were recovered as part of Operation Airborne, which involved officers investigating attempts to smuggle contraband into the all-male prison over the weekend of 12-14 August.