South Korean government convened an emergency meeting Tuesday afternoon to discuss measures against Pyongyang's announcement of conducting nuclear tests in the future.

The Presidential Office called an emergency meeting of related ministries Tuesday afternoon to discuss the statement issued by the Foreign Ministry of the Democratic People's Republic of Korea (DPRK), said Yoon Tae-young, spokesman for the Presidential Office, at a news briefing.

The South Korean government decided to strengthen surveillance of DPRK's nuclear activities and exchange options with related nations over the issue, Yoon said.

"President Roh Moo-hyun has clearly stated the country's policy of not allowing the nuclearization of the North (DPRK) on a number of occasions, and he also warned during his recent summit with the U.S. president that the situation would be totally different should the North conduct a nuclear test," Yoon said.

Ministers in charge of foreign affairs, security and defense will hold a security policy coordination meeting on Wednesday morning to discuss South Korea's official reaction and detailed measures against a possible nuclear test, according to Yoon.