Malaysian authorities are investigating thoroughly the latest media report on the alleged involvement of other countries, in particular Singapore, in spying activities against Malaysia.

Foreign Minister Anifah Aman said the government was extremely concerned about reports of alleged spying by a number of countries on Malaysia.

NONE He said if these allegations were eventually proven, it was certainly a serious matter that the Malaysian government strongly rejected and abhorred.

The ministry will call the Singapore high commissioner today to seek clarification on the alleged spying activities by Singapore against Malaysia, he said in a statement last night.

"The security and sovereignty of Malaysia remain the utmost priority of the government. It cannot be over-emphasised that spying against a good friend and neighbour is unacceptable and goes against the true spirit of and commitment to good neighbourly relations," Anifah said.

He noted that Malaysia and Singapore currently enjoyed mutually beneficial and strong ties as reflected by the excellent relations between the two prime ministers and the expanding areas of cooperation.

An online news portal reported that secret documents leaked by American whistleblower Edward Snowden revealed that Singapore had aided an intelligence group behind an alleged spying activity in Malaysia.

- Bernama