A report published on Sunday said that North Korea has moved two more missile launchers to its east coast, where preparations are apparently under way for a missile test as tensions simmer on the peninsula.

A report published on Sunday said that North Korea has moved two more missile launchers to its east coast, where preparations are apparently under way for a missile test as tensions simmer on the peninsula.

“The North Korean military last week moved two launchers believed to be for Scud missiles to the northeast province of South Hamgyong, Yonhap news agency said, citing a senior Seoul official.

"We have discovered the North has moved two additional TELs (transporter erector launchers) to the east coast... after April 16," the official was quoted as saying, adding Seoul and Washington were closely monitoring the site.

In another cotext, North Korea dismissed a claim by a right-wing US website that it might have been behind the deadly bombings in Boston, decrying the report as "false propaganda" and stressing that it is against all terrorism.

“When the (North) feels necessary to strike the US, it would not resort to such heinous terrorism in hiding," Pyongyang's Korean Central News Agency (KCNA) said.

WorldNetDaily (WND), a controversial US website that carries news and commentary from a conservative viewpoint, published Wednesday an article claiming North Korea might be involved in Monday's attack that left three dead and 180 injured.

"The Boston Marathon bombing...(raised) questions among analysts whether Pyongyang, as in some of its past terrorism, used proxies to carry out the attack," it said, amid ongoing tensions between North Korea and the United States.

The website also claimed the communist nation had "a history of a relationship" with Al-Qaeda.

The North's Korean Central News Agency, in an editorial published late Saturday, slammed the WND claim as "false propaganda which does not deserve even a passing note".

It denied any links between Pyongyang and Al-Qaeda, and accused the conservative website of cooking up "sinister plots" to tarnish North Korea's image.

"The (North) would like to stress once again that it has no touch with Al-Qaeda and has consistently maintained the stand of opposing all forms of terrorism," the English-language editorial said.