Three people have been charged after almost $128,000 worth of cocaine was seized as part of police investigations into a ‘dial-a-dealer’ operation in Sydney.

Police approached a stationary car at Argyle Street, The Rocks, about 7.30pm on Wednesday.

Officers spoke to the 26-year-old driver who then allegedly accelerated into a parked police vehicle, causing minor damage to both cars.

The man allegedly attempted to swallow a number of small resealable bags as he was being arrested, NSW Police said.

Five bags believed to contain cocaine were recovered and seized by police.

The man was taken to St Vincent’s Hospital under police guard for treatment.