A Philippine security official says China is “pushing us to the wall” with growing aggression in the disputed South China Sea and warned that “all options are on the table” for Manila’s response, including new international lawsuits.

The Philippines accused China on Tuesday of intimidating its fishermen at a disputed South China Sea shoal, and normalizing an “illegal presence,” after Beijing sent its largest coast guard vessel into Manila’s maritime zone.

Growing tensions between China and the Philippines in the disputed Scarborough Shoal in the South China Sea are reaching a boiling point, Manila officials say.

Manila has demanded Beijing to immediately withdraw its 12,000-ton China Coast Guard vessel 5901 known as “The Monster” from Philippine waters.