China sent its second aircraft carrier, the first to be built domestically, through the Taiwan Strait on Sunday, the Defense Ministry in Taipei said, with the carrier group shadowed by U.S. and Japanese naval vessels.

The carrier, known as the Type 002 and accompanied by a battle group, sailed through the waterway from the East China Sea into the strait, the ministry said.

It said the Taiwanese military scrambled fighter jets in response and monitored the situation. No further details were immediately available.