Six people has died and 97 have been rescued from a stricken Indonesian passenger ferry in the Java Sea, Indonesia’s search and rescue agency has said.

A search and rescue operation was launched after contact was lost with the Virgo Transport 8 ship, which was carrying 243 people, as it encountered bad weather, Indonesia’s search and rescue agency said.

The search for the remaining passengers is ongoing.

The ferry was travelling from Surabaya to the South Kalimantan city of Banjarmasin and was last reported to be about 150km (93 miles) south of Banjarmasin around 02:00 local time on Sunday (18:00 GMT on Saturday).

Authorities received the initial distress report at 04:10 from the vessel’s operator PT Virgo. The ship left Surabaya at 10:33 on Saturday and was scheduled to arrive in Banjarmasin on Sunday at 14:00, according to data from two maritime monitoring sites.

A joint task force involving Indonesia’s search and rescue agency, navy, maritime police and other parties has been set up for the rescue effort.

Ships and a helicopter have been deployed to the scene and all other vessels in that area of the Java Sea have been alerted to report signs of any passengers.

An operations post for handling the accident was set up in the Trisakti Port area on Sunday morning.