The moment I realised my son had vanished - and what I'll do to find him: Mother of student, 23, who went missing after a house party reveals she is analysing his phone records as she accuses police o

The mother of student Jack O'Sullivan has relived the heart-stopping moment she realised he was missing. Jack O'Sullivan, now 23, has not been seen since he vanished after a night out in Bristol on March 2 Catherine claimed the family has 'to do a lot of this ourselves' and said they feel as though the police have 'forgotten' them Police have now reduced contact with the family to just once per week, something Catherine said has been 'incredibly tough' on the 'desperate' family. Jack had been at a house party with friends from his course when he left in the early hours of the morning Pictured: Jack O'Sullivan walking across Junction Swing Bridge on the night he went missing He was then seen on CCTV turning ontoBrunel Lock Road at 2.57am on March 2 Around 13 minutes later, at 3.08am, the graduate was seen passing a car park near McAdam Way He was then seen at 3.17am near a grassy area beneath a raised road, Brunel Way Catherine said: 'Initially the police only seemed to look at CCTV up to a certain time so we pushed to see further footage because we know his phone was still active until 6:45am, which is a long time after he is seen. Jack's parents, Catherine and Alan O'Sullivan, lodged a formal complaint against Avon and Somerset Police last month after it missed crucial CCTV evidence on the night he went missing Jack attended school in Bristol before going on to graduate at Exeter University and then returning home to continue his studies. The 23-year-old law graduate vanished after going to a house party on Hotwell road in Bristol in the early hours of March 2 He is seen crossing the Junction Swing Bridge at 2.53am, turning down Brunel Lock Road at about 2.57am, passing a car park near McAdam Way at 3.08am, near a grassy area beneath the raised Brunel Way at 3.13am, walking across Plimsol Bridge 3.25am and was last seen walking up Bennett Way at 3.39am.