Two days after nuclear officials found a small amount of explosives on a forklift on the grounds of Sweden's largest nuclear power plant, police said they still had no clues about possible perpetrators or how the material got there.

Officers completed a search of the plant's premises in the morning, but found no other explosives, police spokesman Tommy Nyman said Friday.

"There's no suspect and we're trying to find out the motive now...how it could get in there, and why," he said.

Nuclear officials said they had received no threats.

Nyman said investigators were analyzing witness statements and security camera footage of the vehicle's movements. He declined to give more details.

Power utility Vattenfall said the clay-like, fist-sized explosive was found on a fire extinguisher in the forklift during a routine check as it entered the high-security enclosure, where the four reactors are situated, from the plant's adjoining industrial area.

"To me, it looked like the size of a fist," Ringhals spokesman Gosta Larsen said, noting that the small gray mass would have been difficult to spot if the sniffer-dogs had not found it.

There was no danger of explosion because the material did not have a detonator or triggering device, police and nuclear officials said. They insisted that even if it had exploded, the damage would have been minimal and would not have affected the plant.

Police combed the outer enclosure of the Ringhals plant -- an area the size of 150 football fields -- but found no indication that the explosive had been brought in through or over the surrounding fencing, Gith Thedvall, a local police spokeswoman, said.

"So it must have been brought in by someone who came through the control gates," she said, referring to the gates at the plant's outer enclosure.

Wednesday's incident prompted Sweden to increase its security alert at the country's three nuclear plants, including Forsmark and Oskarshamn.

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Editor's Note: If the explosives had no business of the nuclear plant's grounds then someone brought the explosives in...and with no legitimate use on the plant's grounds, it can only be there for nefarious purposes. Remember, both Osama bin Laden and Ayman al Zawahiri have mandated that al Qaeda pursue to securing of nuclear capability. This is not outside the realm of reality when recognizing that al Qaeda experiments with crude devices.


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