The Customs Department seized hydroponic weed worth Rs 12.4 crore at the Mumbai international airport from three separate groups of passengers arriving from Bangkok over a period of four days, and arrested six of them, officials said on Wednesday, reported news agency PTI.

The operation was conducted at the Chhatrapati Shivaji Maharaj International Airport (CSMIA) between Saturday to Tuesday, during which it also seized electronic items worth more than Rs 56 lakh and arrested three other passengers from Sharjah, they said, reported PTI.