The fishing boat was spotted by the Malaysian Maritime Enforcement Agency (MMEA) about 101 nautical miles from Simpang Mengayau on Monday (Sept 19).
Kudat Zone MMEA director Maritime Commander Maurice Grenville Abeyeratne said their vessel KM Ikhlas intercepted the boat during a routine patrol at 2.27pm.
After a check, he said, they found the six crewmen aged between 23 and 53 on the fishing boat, adding none of them possessed any identification document.
“The boat, as well as the crewmen, have been brought to the Kudat public jetty to be handed over to the Kudat MMEA office for further investigations,” he added.
Abeyeratne said the case was being investigated under the Immigration Act 1963 as well as the Fisheries Act 1985/63.
He advised coastal communities to report the presence of foreign vessels either to the Malaysia Emergency Response Services (MERS) 999 number or the Kudat Maritime Zone operations centre at 088-611858.