Burger King sustained a virtual Big Mac attack Monday when its Twitter account was apparently hacked then redesigned with a bogus claim of a corporate takeover by McDonald's.
Its @BurgerKing account briefly sported the McDonald's golden arches logo, a curt statement that Burger King "just got sold to McDonald's" and tweets promoting Chicago rapper Chief Keef before it was abruptly suspended.
There was no immediate comment from Burger King.
On its own Twitter feed, McDonald's said: "We empathize with our @BurgerKing counterparts. Rest assured, we had nothing to do with the hacking."
Meanwhile, a Twitter spokesman told AFP by email: "We don't comment on individual accounts for privacy and security reasons."
It was unclear if Keef had any role in the incident. According to the AllHipHop.com music blog, the 17-year-old is currently serving a 60-day sentence in juvenile detention on a gun charge.
Monday was Presidents' Day, a public holiday in the United States.