Not terror related apparently.
Plymouth shooting: Multiple fatalities in 'shocking' incident in Keyham, Sky News understands
https://news.sky.com/story/significant-ambulance-response-deployed-to-incident-in-plymouth-12379946#
Plymouth shooting: Multiple fatalities in 'shocking' incident in Keyham, Sky News understands
https://news.sky.com/story/significant-ambulance-response-deployed-to-incident-in-plymouth-12379946#