A man has been arrested after £750,000 of heroin was found by police in a car as part of a 24-hour operation to target youth crime in part of London.
About 82 other people were arrested during the operation in Hackney on Thursday. Many were arrested in connection after weapons were found.
Six of the arrests made were in connection with a stabbing in the area on 5 February.
The operation coincided with the school half-term and Valentine's Day weekend.
Weapons seized during the crackdown included knives and a potato peeler.
Officers raided homes and extra patrols were put on around schools, the town centre and public transport as part of the 24-hour operation.
It was financed by the Home Office Tackling Knives Action Programme, along with resources from the Metropolitan Police and other partners.
Ch Supt Steve Bending, Hackney's Borough Commander, said: "The vast majority of young people in Hackney are law abiding and a key part of this operation is focused on their safety and engagement through school activity.
"A very small number choose to carry weapons, placing themselves and others at risk and this operation is aimed at targeting them.
"We are determined to continue to work through engagement and enforcement activity working with our partners and other police units."