Per TheProgramKC (Soren Petro) Twitter:
Tyson Jackson has arrived at Chiefs Camp in River Falls. Soren Petro Spotted him entering the team's facility moments ago.
Per 610 Sports, he has signed his contract.
Josh Looney at the Mothership makes it official as well:
Tyson Jackson has officially signed his contract.
We can officially welcome the newest Kansas City Chief!
Update: LB Weston Dacus was waived to make room for Jackson.
Stay tuned for more details on his arrival...