Chinese fishing boats have been involved in two violent clashes with both South and North Korean boats off the coast of the Korean peninsula. From the Los Angeles Times:
South Korean maritime officials have detained 11 Chinese suspected of clubbing to death a Coast Guard officer last week as he tried to board their fishing vessel, which was suspected of illegally plying Korean territorial waters.
A North Korean patrol boat fired on another Chinese fishing boat on Saturday, wounding the vessel’s captain.
Seoul officials have long complained of illegal Chinese intrusion into the fish-rich waters off the peninsula. Despite a fisheries treaty with Beijing signed in 2001, South Korea in the last four years has captured more than 1,750 Chinese fishing vessels that allegedly violated the pact.