Andhra Pradesh Chief Minister N Chandrababu Naidu on Tuesday expressed unhappiness over the way the Malaysian police detained IT professional from his state on March 9.

In a strongly worded letter to Malaysian Prime Minister Mahathir Mohammed, Naidu sought his intervention in this "serious matter".

"The state and country are seriously concerned with this development," the chief minister said adding he was extremely distressed to learn about the incident in which more than 175 Indians, mostly from Andhra Pradesh, were detained in Kuala Lumpur for allegedly possessing fake visas.

Thanks to the intervention of Indian high commission, most of these innocent people, who possessed valid papers, were released in the evening, Naidu said.

Asserting that Andhra Pradesh always looked forward to increased cooperation with Malaysia, he said, "These young, industrious IT professionals, who have made this state proud, had gone to Malaysia on invitation to work for Malaysian companies. They now feel traumatised and their confidence is shaken. Their families here are extremely worried."

In an identical letter to External Affairs Minister Yashwant Sinha, the chief minister urged him to take up the matter with the Malaysian government.