Malaysia on Thursday reported the third A/H1N1 flu case, a student who returned from the United States on June 1 and tested positive for the infection.

The health authorities are tracing the 276 passenger and crew on Malaysian Airlines flight MH091 on June 1.

The 23-year-old man returned to Malaysia for a holiday but did not have any fever when he arrived at Kuala Lumpur International Airport.

However, he began to have fever and cough and was sent to the hospital in Seremban, capital of central Negeri Sembilan state on Wednesday for treatment and observation, health director-general Ismail Merican said.

"The student was confirmed to have been infected with the A/H1N1 flu virus at 4:00 AM on Thursday (2000 GMT Wednesday) through laboratory tests conducted by the Institute of Medical Research," he said.

"The patient is in stable condition and has been given anti-viral treatment," he added.

Health authorities had earlier announced Malaysia's first two A/H1N1 flu case on May 15 and 16. Both were students who also returned home from the United States.

(Xinhua News Agency June 4, 2009)