Pro Football Talk reported late Monday night that the 31-year-old lineman was signed by Kansas City. He joins a Chiefs' defense that lost defensive end Mike DeVito to a season-ending Achilles injury Sunday.
Vickerson visited the Bengals last week and posted to the social media site Instagram last Tuesday a picture of a Bengals T-shirt, indicating he had signed with a team. A team official told ESPN.com that day that a signing wasn't imminent. Vickerson also later removed that picture.
After the deal with the Chiefs was made official, he placed another photo on Instagram, this time in a Chiefs shirt.
Cincinnati did have a roster spot for Vickerson if it were trying to sign him. On Saturday the Bengals waived defensive lineman Christo Bilukidi, who signed on Monday with the Ravens. Also on Monday, the Bengals waived cornerback Onterio McCalebb off the 53-man roster after adding him from the practice squad when Bilukidi was let go. McCalebb's release Monday put the Bengals at 52 players. It's likely that final spot will get filled by a defensive lineman before the end of the week.
The Bengals have two defensive linemen on on the practice squad, David King and Devon Still. Still likely won't be moved to the 53-man roster after admitting last week that his mind hasn't been "100 percent" on football in recent months after his 4-year-old daughter was diagnosed with a stage-4 pediatric cancer in June. Doctors have given her a 50-50 chance of survival.