Searching the web currently comes up with some 240 articles like this one.

Boat laden with surface-to-air missiles stopped in Finland on its way to China

Around 160 tonnes of explosives and 69 surface-to-air missiles have been found by Finnish officials on a cargo ship bearing a British flag and ultimately destined for China, authorities say. They said they did not know the origin of the Patriot missiles or who was supposed to receive them.

The Thor Liberty sailed from the north German port of Emden on 13 December and two days later docked in Kotka, southern Finland, to pick up a cargo of anchor chains, officials said. Its final destination was Shanghai, but it was not clear whether that was where the arms shipment was going, officials said.

That is quite some lazy journalism in that piece. Patriot missiles do not just come from nowhere and are covered by various agreements that do not allow them to bought and sold by everyone. Just a few minutes of searching the web would have told those Finish officals and the journalist what is happening here. It is indeed quite obvious where those Patriot missiles come from and where they are going.

From a BBC report:

Police did not confirm Finnish media reports that the ship had also been scheduled to stop in South Korea, Reuters news agency reports.

YLE.fi, December 20, 2011 Missile shipment confirmed aboard detained vessel

According to information received by YLE, the missile shipment originated in Germany and is destined for South Korea.

Searching for South Korea and Patriot missile shows that this ship's load is very likely part of a long arranged official government deal:

AFP, July 13, 2005: German defense chief in talks on sale of missiles to South Korea

A German defense chief met with South Korean officials here Wednesday for talks on the sale of second-hand Patriot missiles to Seoul, the defense ministry said.

UPI, March 13, 2007: South Korea Wants To Buy Second-Hand Patriot Missiles From Germany

DW: November 28, 2008: South Korea Takes Delivery for Patriot Missiles from Germany

The South Korean Air Force received the first shipment of Patriot missiles from Germany on Friday, Nov. 28, the air force in Seoul said.

The 48 anti-missile and anti-aircraft missiles, which will replace the country's outdated Nike air defense missiles, are to be deployed by 2012 after two years of trial operation.

DID, December 1, 2008: Raytheon Begins SAM-X/Patriot Missile Work in South Korea

In March of 2008, Raytheon announced an initial contract (amount undisclosed) for preliminary planning efforts aimed at integrating Patriot air defense/ABM missiles into South Korea’s national command and control structure.
…
An effort was made in 2007 to buy second-hand Patriot PAC-2 systems from Germany… and delivery of those missiles has now begun.

Chosun, September 19, 2011: Patriot Missiles Useless as Radar Out of Order

The Patriot missiles, a surface-to-air missile capable of intercepting enemy aircraft or missiles in midair, were deployed under the Air Force's "SAM-X" next-generation air-defense missile project and are the South Korean military's key air-defense weapons.
…
Of 32,149 Patriot system parts it intended to acquire from Germany, the military had procured only 10 percent or 3,142 parts by July. It also lacks a proper maintenance float program in place.

"We plan to put the radars into full operation by early next year," an Air Force spokesman said. "But problems can occur because they are now in limited operation. We're going to import parts to replace the ones that caused the breakdowns by year's end."

According to Thorco Shipping the current Thor Liberty voyage is expected (pdf) to end in Qingdao, China on February 19. That certainly leaves enough time for a discharge stopover 200 miles east of Quingdao in South Korea.

It seems obvious to me that the Patriot missiles on board of the Thor Liberty are second hand, coming from Germany and are destined for South Korea in an official deal that involves the original manufacturer Raytheon.

If I can find that within a few minutes why are news agencies and journalists coming up with scare headlines like Finland seizes Patriot missiles headed for China and articles that fail to point out the obvious?