A boat carrying 27 undocumented migrants capsized in the waters of Teluk Ramunia, Pengerang, near Kota Tinggi, Johor this morning.

Johor Maritime director Nurul Hizam Zakaria said 19 of them, comprising 10 women and nine men, were found safe, while two women were found drowned.

"The remaining six victims are still missing at sea. The Johor Bahru Maritime Rescue Sub Centre has activated Op Carilamat (search and rescue operation) for them at 6.40am today," he said in a statement.

Nurul Hizam said at 3.45am, the Malaysian Maritime Surveillance System radar detected a suspicious target moving from the waters of Pulau Bintan, Indonesia, to the country's waters and had channelled information to the assets of the Royal Malaysian Navy KD Sri Indera Sakti, which was on Op Benteng duty.

Following that, the navy detected the boat at 4.10am, but the boat fled before it capsized at 0.8 nautical miles of Teluk Ramunia at 4.50am, he said, adding that this was the second boat capsize incident this week involving undocumented migrants.

Three days ago, six Indonesian women drowned, while seven were rescued when their boat capsized in the waters of Pontian Besar.

- Bernama