A magnitude 6.4 earthquake struck off the coast of the southern Philippines on Monday, the US Geological Survey (USGS) said, but there were no reports of damage and no tsunami warning was issued.
The Philippines protested strongly on Tuesday against Beijing's use of a water cannon on Filipino fishermen in the disputed waters of the Scarborough Shoal, warning the incident would escalate tensions.
Former Philippine president Gloria Macapagal Arroyo was detained on Thursday on charges of plunder, a crime that carries a maximum penalty of life in jail, in one of a series of corruption cases brought against her. Less than three months after she was released on bail following about eight months in detention on charges of election fraud, the latest charge against the ailing Arroyo involves the more serious offence of misusing state lottery funds.