UPDATE 1-Iraq blocks Syria-bound N Korean plane, suspects weapons cargo

BAGHDAD, Sept 21 (Reuters) - Iraq said on Friday it has

denied permission to a North Korean plane bound for Syria to

pass through Iraqi airspace on suspicion it could be carrying

weapons, and the United States stressed the need to prevent any

such arms transfers.

Iraq has also denied a Western intelligence report that

Iranian aircraft had flown weapons and military personnel over

Iraqi airspace to help Syrian President Bashar al-Assad in his

18-month-old fight against rebels seeking to end his rule.

U.S. officials said earlier this month they were questioning

Iraq about Iranian flights in Iraqi air space. On Wednesday,

U.S. Senator John Kerry threatened to review U.S. aid to Baghdad

if it does not halt such overflights to Syria.

"Continuing the Iraqi government policy to investigate the

passing of weapons to Syria through Iraqi land and air space,

the Iraqi authorities prevented a North Korean plane from going

to Syria, after they suspected that the plane was shipping

weapons," Ali al-Moussawi, media advisor to the Iraq's prime

minister, told Reuters.

Moussawi said the scheduled North Korean plane's itinerary,

which was due to travel to Syria on Saturday, had aroused Iraqi

suspicions but that there had been no contact between Baghdad

and North Korea on the issue.

He said that despite repeated requests from the Iraqi side,

the United States had not presented any evidence that Iranian

civilian aircraft were shipping arms to Syria via Iraq.

"We have told the Iranians that we could search their planes

any time, randomly, and whenever we get any evidence (that they

are shipping weapons)," he said. "We will seriously stop these

plans (from passing through Iraqi space)," he added.

BIDEN CALL TO PRIME MINISTER

Although charges that Iraq has allowed Iran to send arms to

Syria are not new, the intelligence report said the extent of

such shipments was far greater and more systematic than has been

publicly acknowledged, thanks to a deal between senior Iraqi and

Iranian officials.

The report also said Iran was dispatching trucks overland

via Iraq westwards to Syria.

The White House said on Friday that Vice President Joe Biden

discussed in a telephone call with Iraqi Prime Minister Nuri

al-Maliki the need to prevent Iraqi territory and airspace from

being used to ship weapons to Syria.

Maliki's office said the prime minister assured Biden that

Iraq refuses to be used for any weapons transfer to either party

in the conflict in Syria.

"The prime minister expressed the Iraqi government's

dissatisfaction at allegations by some informal American circles

raising suspicions about Iraq's position towards the Syrian

crisis," the statement said.

Iraq's leaders dismiss claims they support Assad, but they

also fear a nightmare scenario: his downfall brings a hostile

Sunni Muslim regime to power and emboldens disenchanted Sunnis

in Iraq's own fragile sectarian mix.

Syria's upheaval is politically tricky for Iraq's Shi'ite

Muslim-led government. Close to Assad's ally, Shi'ite Iran,

Baghdad has resisted joining Western and fellow Arab calls for

the Syrian leader to step down while also calling for a reform

process in Syria.

Baghdad has reinforced key points along its 680-km

(420-mile) desert border with Syria.