Asiasi (personal) was placed on injured reserve Tuesday, Mike Reiss of ESPN.com reports.
The 23-year-old missed Sunday's loss to Buffalo due to personal reasons, but it's unclear why he was moved to injured reserve. Asiasi will be sidelined for at least the next three games. He's played only 81 snaps in five games this season, so his absence is unlikely to impact New England's gameplans.