Four arrested in western Sydney drug probe

Four people have been arrested in western Sydney by police investigating the supply of illegal drugs.

Officers arrested a 38-year-old man after stopping his car in Villawood about 11am on Thursday, with a search of the vehicle allegedly finding drugs believed to be heroin and ice.

Detectives executed search warrants at homes in Canley Heights, St Johns Park, Fairfield Heights and Cabramatta and arrested two men and a woman, all of whom were refused bail to appear at Parramatta Local Court on Friday.