According to Focus Taiwan, Kuo said the two sides discussed maintenance of undersea cables, which lie on the ocean floor and carry telecommunications data or electricity, and discussed the possibility of establishing a new information-sharing mechanism.

Kuo said the delegates also discussed raising the issue at the meeting between officials from Taipei and Tokyo on maritime affairs, and noted that the meeting so far had focused mainly on fisheries, coast guard operations and conservation cooperation.

Kuo said Taiwan would need assistance from Japan in safeguarding undersea cables because Japan has technology and expertise that Taiwan seeks.

Kuo's remarks came a day after three of 14 undersea cables that connect Taiwan were reported severed.

Taiwan's Ministry of Digital Affairs said while the cause of the damage remained under investigation, officials did not rule out man-made incidents.

In addition to undersea cable issues, four lawmakers from each side discussed cooperation on security, coast guard operations and disaster prevention, among other topics.

The meeting between DPP and LDP lawmakers was first held in 2021 and aims to facilitate policy discussions and cooperation between the parties and to serve as a channel of communication since Taiwan and Japan do not have formal diplomatic relations.

This year's meeting was expanded to include four participants from each side, instead of two in past sessions.

DPP participants were Kuo Kuo-wen, Chen Kuan-ting, Lee Kuen-cheng and Wang Cheng-hsu. LDP participants were Tsuyoshi Hoshino, Kazuchika Iwata, Takashi Yamashita and Eikei Suzuki, all members of Japan's House of Representatives.