Taiwanese police are investigating the death of a Vietnamese man whose body was found floating on a local river, Taiwan's Central News Agency has reported.

On Tuesday, a road maintenance worker spotted the body on the river near the Central Cross-Island Highway in eastern Taiwan's Hualien County and called police to the scene.

Initial examinations showed a six-centimeter wound on the dead man's forehead, police said, adding that he might have died several hours earlier.

Police found a health insurance card and an alien resident certificate in his bag, which identified the man as Nguyen Thuc Chin of Vietnam.

In other news, Taiwanese police reported that a Vietnamese migrant worker fled Taoyuan International Airport on April 15 shortly before he was scheduled to take a Vietnam Airlines flight to Hanoi.

They said the 21-year-old man skipped the flight to stay in Taiwan illegally, police said.

The man had been escorted to the airport by an employment broker because his labor contract had expired.