(Corrects to add dropped word "with" in headline)
Jan 12 (Reuters) - Canada's AltaGas is in talks to merge with WGL Holdings Inc, the parent of natural-gas utility Washington Gas, in a deal worth $5 billion-$6 billion, the Wall Street Journal reported, citing people familiar with the matter.
WGL's shares rose 6.8 percent to $81 in late-afternoon trading on Thursday, while AltaGas's stock was down 1.3 pct at C$33.65.
A deal could be announced this month assuming that the talks do not fall apart, or see another bidder, the report said. (on.wsj.com/2jcr9kM)
Regulatory or political pushback could be a potential obstacle to any deal, one of the people familiar with the matter told the newspaper.
WGL was weighing options in November, including a sale after receiving takeover interest from Spain's Iberdrola SA. (reut.rs/2ilgi3H)
AltaGas and WGL were not immediately available for comment. (Reporting by Vishaka George in Bengaluru; Editing by Sriraj Kalluvila)