BB&T Corp. said Friday that it has extended the due diligence period in its $157.9 million deal for Matewan BancShares of Williamson, W.Va.

The review, which had been set to end last Friday, will now run through April 28, BB&T said. It had agreed to the deal in February.

A BB&T spokesman would not provide details, and Matewan executives did not immediately return telephone calls.

Analysts said that though due diligence may have turned up problems, BB&T has been on a buying spree and may just need more time.

Indeed, BB&T has just completed the $141.7 million acquisition of Richmond, Va.-based Scott & Stringfellow Inc., an investment banking firm.

Officials of BB&T "have had a lot of things on their plate," said Edward Najarian, an analyst at First Union Capital Markets.

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