North Korea is restoring facilities at a long-range rocket launch site that it dismantled last year as part of disarmament steps, according to foreign experts and a South Korean lawmaker who was briefed by Seoul's spy service, CNBC reported quoting AP.

The finding follows a high-stakes nuclear summit last week between North Korean leader Kim Jong-Un and U.S. President Donald Trump that ended without any agreement.

The 38 North report published Tuesday said the rail-mounted processing building, which is where space launch vehicles are worked on before they're moved to the launch pad, is being reassembled. It said two support cranes can be seen at the building, and walls have been erected and a new roof added.