The mum of missing Jack O'Sullivan has blasted trolls who accused of her of not doing enough to find her son.

Student Jack, 23, vanished without trace after being last seen at 3.15am on Saturday, March 2, in the area of Brunel Lock Road/Brunel Way, in Bristol.

Since his disappearance multiple searches have taken place and a big campaign has been on-going to find out what happened to him.

But his mum Catherine O'Sullivan, who said she spends 'all day every day' focused on the hunt, said she still gets trolls questioning her efforts.

She said: "We continue to do absolutely everything we can to make sense of the hell that we are going through.

"Still no answers to so many questions that just don't make sense.

"I have had messages that read ‘do you really want to find your son as you are not trying that hard’. If these people only knew the lengths we are going to. There is not an hour of a day that I'm not doing my very best to get an answer."

Following this the campaign group said it had started a new search programme involving metal detectorists looking for his phone and other clues.

In her latest post on the 'Find Jack' Facebook page, Catherine said these searches had been 'disrupted' by recent storms but would be resuming again soon.

She added: "We have had technical data analysed and we put searches in place - we have the most amazing support from professionals that are doing everything possible to help us.

"Then we get a storm that completely takes all our best laid plans away.

"We will go again, as soon as it is possible."

The last confirmed sighting of Jack was at 3.13am on Sunday, March 2, as he walked onto a grass area at the junction of Brunel Lock Way and Brunel Way.

His family say they have ''lost all faith'' in Avon and Somerset Police's investigation and are continuing to search everyday themselves.

A complaint to the IOPC remains ongoing.

Avon and Somerset Police say that since Jack's disappearance, more than 20 different teams and departments have been involved in the investigation.

A spokesperson said more than 100 hours of CCTV have been reviewed, 200 hours of searches on the river and the surrounding banks, mounted police searches from Bristol city centre to Flax Bourton, 40 land searches, and 16 drone deployments.