The government will tighten controls on the transfer of information technology and export of IT-related products to North Korea by revising trade control regulations this fall, official sources said.

The decision is part of sanctions against Pyongyang over its test-firing of missiles earlier this month, the sources said Wednesday.

The government has also tightened surveillance of exports to North Korea via third countries of materials and products that can be used for weapons of mass destruction, the sources said.