An unspecified Chinese People's Liberation Army Navy fighter jet crashed on Tuesday in Hainan, a southern Chinese province in the South China Sea, The Associated Press reported, citing the Chinese military's official news outlet.

Both pilots were killed in the crash, but there were no injuries or fatalities on the ground, the report said.

The crash is under investigation.

A Chinese fighter jet crashed in southern China on Tuesday, killing the two pilots on board, The Associated Press reported, citing the Chinese military's official news outlet.

The unspecified fighter jet went down in Ledong county, in Hainan, a Chinese island province in the South China Sea, the report said. The country has set up military outposts in the region to enforce its sovereignty claims in the contested waterway.

According to reports, no citizens or bystanders on the ground were harmed.

A video purports to shows the crash site in Hainan:

Plane crashes are not uncommon for the US military, which has seen a high number of incidents in recent years, or the Chinese military.

Last year, at least a dozen crew members of a People's Liberation Army aircraft were killed when the plane, either a refueling aircraft or an electronic-reconnaissance aircraft, crashed in Guizhou, a province in southwestern China, the South China Morning Post reported.

In 2016, Yu Xu, one of China's first female fighter pilots, was killed in a training accident, and a Chinese navy fighter jet crashed into a factory in Taizhou, a city in eastern China.

Over the years, Chinese military aircraft have also crashed in residential areas, injuring civilians.

Multiple crashes, some fatal, have involved the J-15, a derivative of a Soviet prototype that serves as China's only carrier-based fighter.

Tuesday's plane crash is under investigation, the AP report said.