BEIJING, Sept. 6 (Xinhua) -- The Chinese People's Liberation Army (PLA) Eastern Theater Command remains on high alert and is fully prepared to resolutely safeguard national sovereignty and security, as well as regional peace and stability, a spokesperson said Saturday.

Shi Yi, a spokesperson for the Command, made the remarks while commenting on Canadian and Australian warships sailing through the Taiwan Strait.

On Saturday, the Canadian frigate Quebec and the Australian destroyer Brisbane conducted a transit through the Taiwan Strait and engaged in provocative actions, which sent wrong signals and heightened security risks, Shi said.

The Command's naval and air forces closely tracked and monitored the Canadian and Australian military vessels' passage through the Taiwan Strait from start to finish, and took effective responses accordingly, the spokesperson said. ■