so lots of questions here for british authorities, why he wasn't being monitored more closely. a british prime minister boris johnson visiting the scene of the attack today, acknowledging that the system doesn't work. take a listen. >> it's clear to me that this guy was out, he'd served half of his sentence, he was out on automatic early release. i have long said that this system simply isn't work. it does not make sense as a society of putting people convicted out on early release. we argue that people should serve the terrorists serve the term of which they're sentenced. that's my immediate takeaway from this. >> and this could get political for the prime minister. keep in mind the general election is some 13 days away, and he's facing even more