Mumbai: Mumbai Customs seized 9.79 kg of gold and electronics worth Rs 6.75 crore and foreign currency worth Rs 88 lakh in a four-day operation at the Chhatrapati Shivaji Maharaj International Airport, an official said on Saturday.

The officer said four people have been arrested in 20 cases in connection with the seizures made from May 27 to May 30.

Two foreign nationals traveling from Sharjah and Muscat to Mumbai were found carrying gold dust hidden in wax in a rubber sheet recovered from their prayer mat, he said.

An Indian national traveling to Bangkok was caught with foreign currency worth Rs 88.6 lakh hidden inside two shampoo bottles.

In another case, an Indian national traveling from Dubai had hidden gold dust inside a sanitary pad, the official said.

The official said five foreign nationals traveling from Colombo and Dubai were found carrying gold inside undergarments and sewn into their clothes, while 11 Indians traveling from Dubai, Muscat and Jeddah had hidden gold and mobile phones. .