Federal investigators are studying a possible connection between a November power station bombing in Jackpot and a Dec. 22 blast that knocked out electricity in Jean.

Agents from the Bureau of Alcohol, Tobacco and Firearms were in Jackpot this week to investigate whether the blasts were linked.Sig Celaya, head of the Las Vegas ATF office, said there are similarities between the two cases where high explosives were used to destroy power company substations.

"Both are near state lines, both substations are in close proximity to casinos and both happened about the same time of night," Celaya said.

Celaya, though, said the similarities in the two cases may be mere coincidences.

Jackpot is a tiny community near the Idaho-Nevada border. Jean is a casino development about 30 miles south of Las Vegas.

Celaya said the explosives used in the Jean blasts had yet to be identified by the ATF's Washington laboratory. But he said it appeared they were commercially manufactured.

Celaya said agents have been sent to Las Vegas from ATF offices in San Francisco and Denver to help in the probe.