The Philippine Coast Guard on Thursday said it conducted another radio challenge on a Chinese vessel wandering inside Philippine waters.

BRP Teresa Magbanua confronted China Coast Guard vessel 3304 which is currently sailing 105 to 115 nautical miles off the coast of Zambales, within the Philippines' Exclusive Economic Zone (EEZ).  

"The PCG has vigilantly contacted the China Coast Guard vessel through radio, clearly stating that its presence constitutes a violation of the Philippine Maritime Zones Act, the United Nations Convention on the Law of the Sea (UNCLOS), and the 2016 Arbitral Award," the PCG said in a statement.

BRP Teresa Magbanua has been monitoring trespassing CCG sea craft for over a week now while protecting Filipino fishermen and their livelihood within Philippine waters.

PCG: China Coast Guard vessels’ deployment off Pangasinan closest yet to Philippine coastline

Two Chinese vessels seen off Pangasinan leave Philippine EEZ: coast guard

Days ago, the PCG drove away the Chinese Coast Guard's so called "monster ship" that was caught sailing closer to the shores of Zambales province.

PCG pushes China's 'monster ship' further away from Zambales coast

CCG 5901 was initially spotted “54 nautical miles from shore” of Zambales. It was pushed back by BRP Teresa Magbanua “to approximately 120 nautical miles.”