Also. . .

Oneok Inc. canceled its plan to acquire Las Vegas-based Southwest Gas Corp. because of concerns over fraud allegations raised by a rival bidder and opposition from Arizona utility regulators. Oneok and Southwest denied the allegations made by Southern Union Co. A lawsuit is pending. Southwest Gas had agreed in May to Oneok’s cash offer of $912 million, or $30 a share, and had rejected a $1.02-billion bid from Southern Union.