Cambodia today rejected Finland's calls for a probe into murder charges against a Cambodian ex-police chief, who was deported from Malaysia to his home country, despite Helsinki's sanctuary offer.

"Finland should not worry so much about the issue," Cambodian Foreign Ministry spokesman Khieu Thavika told reporters.

"We already conducted a full investigation and also Interpol conducted a full investigation into the case," he said, referring to the international policing body.

Finland had offered refuge to Heng Pov, who was convicted and sentenced in absentia by a Cambodian court on September 18 for conspiracy in connection with the killing of a judge in Phnom Penh in 2003.

Could be tortured, executed

The 49-year-old Cambodian fled the kingdom and arrived in Malaysia in early October. Since then, he had been in detention in the country for immigration offences and had been fighting against deportation to his home country.

Heng Pov said he could be tortured and executed in Cambodia, while Finland earlier in the month offered the former police chief a restricted visa allowing him to enter the country.

But on Thursday, Malaysia deported him to Cambodia, prompting Finland to urge Phnom Penh to carry out a full probe into the case.

Amnesty International also slammed Malaysia today for deporting Heng Pov, saying Kuala Lumpur "has failed to respect the asylum process and continues to disregard international customary laws and principles".