June 29 (UPI) -- China may be flexing its muscle in the South China Sea with attacks on Vietnamese fishing boats.
Vietnamese newspaper Tuổi Trẻ reported Thursday two Chinese ships assailed a Vietnamese fishing boat near the disputed Paracel Islands in the South China Sea.
The attack took place on June 18, according to the report.
Authorities in Vietnam's Quang Ngai province said a similar incident occurred on June 15, also involving a Vietnamese fishing boat near the Paracels, known as the Xisha Islands in China and Hoàng Sa in Vietnam.
The archipelago is roughly equidistant from the Chinese and Vietnamese coastlines.
The June 18 attack took place around 7 a.m., when two small Chinese boats, manned by officers in military uniform, approached the Vietnamese boat, which was in the middle of a fishing operation.
The uniformed men proceeded to smash the fishermen's gear and the hull of the boat, then physically assailed the boat's captain, according to the Vietnamese press report.
The earlier attack on June 15 also involved Chinese officers climbing onto a Vietnamese boat uninvited, destroying equipment and incurring more than $6,000 worth of damages.
The newspaper quoted sources from the Vietnamese Fisheries Society, who said they have received detailed reports on the attacks, initiated by members of the Chinese coast guard.
China has been enforcing an annual ban on fishing since 1999 in international waters. The ban is enforced for three months, beginning in May, and Vietnamese fishing vessels have remained prime targets, South Korean news service Newsis reported.
The ban has at time resulted in fatalities. In November 2015, a Vietnamese fisherman was shot to death, in an incident involving armed Chinese vessels near the disputed Spratly Islands.
About 84 percent of attacks on Vietnamese boats take place near the Paracels, Vietnamese media reported.