Camera surveillance technology is helping police investigate the disappearance of a BBC Bristol and Somerset radio presenter. Peter Rowell was filmed on CCTV walking out of a supermarket car park on Tuesday of last week. Det Ch Insp Ian Norrie said: "We know from CCTV his location up to about 9.45am [on Tuesday]. Since then we've had no confirmed sightings and we are unaware of where he has gone." Mr Norrie urges anyone who has seen Peter to contact police.