The Home Ministry (KDN) is tracking down the leaders of the human trafficking syndicate as well as those who are working with similar syndicates from Thailand, Myanmar and Bangladesh.

Its minister, Datuk Seri Ahmad Zahid Hamidi said the government was working with enforcement agencies from the source and transit countries to combat the human trafficking syndicates.

"We find that most of those who come here paid money to enter Malaysia and this money is paid to the head of the syndicate, through the syndicates that they created," he told reporters Sunday.

He said Malaysia had done its best to handle the influx of foreigners but there were limitations to its assistance, especially in the number (of people) who could be held at the detention depots.

Ahmad Zahid was speaking after conducting a land and air survey of the country's border with Thailand together with the Minister in the Prime Minister's Department Datuk Seri Shahidan Kassim here.

He said besides the monitoring and control operations, the national enforcement agencies and Thailand also shared intelligence information in their efforts to combat human trafficking offences.

Earlier, Ahmad Zahid and Shahidan visited the Malaysian Immigration Department Detention Depot in Belantik, Sik where the 1,158 Rohingya immigrants who landed by boat on Langkawi Island on May 10 were placed.

He said there was no accusation made by any country that Malaysia was not assisting the Rohingya and Bangladeshi immigrants.

"We hope they do not easily accuse that Malaysia had not acted according to basic human rights," he said, adding that other nations should also come forward to help.

Meanwhile, he also urged the United Nations High Commissioner for Refugees (UNHCR) not to turn a blind eye and let Malaysia handle the problem alone.

Asked what action would be taken against the immigrants held at the detention depots, he said an investigation paper would be opened and the matter taken to court, in line with the legal provisions.