The Anti-Narcotics Cell (ANC) of the Mumbai Police arrested a 53-year-old woman supplier of drugs and seized 7.2 kg heroin worth Rs 21.70 crore from her possession in Sion Koliwada area, an official said on Wednesday.

The ANC sleuths nabbed the alleged drug supplier, identified as Amina Hamza Shaikh alias Lali, a resident of suburban Mankhud, on Tuesday night, he said.