In an update sent at 11:50 a.m., the account posing under the new name "McDonalds" posted the following update: "F**K A TOOKA GANG BITCH IM #300 @ChiefKeef." The hackers also posted a link to Keef's video for "They Know."
About 25 minutes earlier, the account posted the following statement: "We just got sold to McDonalds! Look for McDonalds in a hood near you @DFNCTSC."
The hacked account also posted a link to the rapper's video "They Know."
TechCrunch reports that the hacking is the work of the group Anonymous.
The hack was accompanied by a change to McDonald's Golden Arches as the avatar and a photo of McDonald's Chicken McNuggets and french fries in its background.
From its actual Twitter account, McDonald's assured the hungry social media type that it had nothing to do with the hack.
"We empathize with our @BurgerKing counterparts. Rest assured, we had nothing to do with the hacking," Burger King's rival said from its account.
In January, Chief Keef was sentenced to 60 days in prison for violating his probation from a following gun charge.