A Democratic super PAC confirmed late Tuesday night that it has pulled approximately $630,000 worth of television ads in the Boston market, some of which would have benefitted Representative John F. Tierney in his reelection fight against Republican challenger, Richard R. Tisei.

The money for the ads—funded by the House Majority PAC, the political action committee aimed at winning back a majority for Democrats in the House—will instead be used for other congressional races around the country, according to the group’s spokesman, Andy Stone.

Stone did not elaborate on why the Massachusetts ads were being cancelled, but said the move was not an indication that something was wrong with Tierney’s candidacy. “It should no way reflect on our confidence that John Tierney will win his race,” he said.

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The group, he said, has reserved $22 million for the purchase of television ads across the country and may still buy ads in the Tierney race in the weeks before the Nov. 6 election.

Tierney, who has held the seat since 1997, is locked in a reelection fight in the sixth district against Tisei, a former state senator.