Police said officers had been conducting a routine surveillance operation in Sydney's Condell Park area on Tuesday when they allegedly identified the trio mobilising to carry out an offence. Officers immediately sought assistance from the tactical operations unit, PolAir, the dog squad and the state intelligence command. Just before 4pm they conducted high-risk stops of two vehicles in Revesby using less than lethal rounds and arrested the three men, aged 18, 19 and 26.