Man arrested by T police as unregistered sex offender apparently wasn't an unregistered sex offender

The Herald reports a Lowell man arrested as an unregistered sex offender at Forest Hills the other day after somebody complained about him taking pictures of little kids turns out not to have a record as a sex offender. As a convicted stabber and prison-guard attacker, yes, but he was released in April after having served his time for those, the Herald writes.