Police investigating the horrific murder of Saltcoats man Alan Lawson are maintaining a strong presence outside his home as the hunt for his killer continued.
Officers confirmed they were following "a positive line of enquiry" and were aware of social media footage believed to be linked to the investigation.
Alan, 36, described as "a quiet man" by neighbours, is believed to have been brutally assaulted at a property in Alexander Avenue, Largs, at the weekend.
He was then left for dead at his home in New England Road, Saltcoats, on Sunday, and died from his injuries in hospital two days later.
It has been claimed that Alan's killer held him hostage and subjected him to a shocking attack - some of which was filmed and uploaded to instant messaging app Snapchat.
Neighbours told of their shock at discovering the crime had happened just yards from their doors.
One man, who lives a few doors away, said: "No one I've talked to heard anything. It is absolutely horrible.
"I don't think any of the neighbours knew Alan well. He kept himself to himself, but would always say hello to you in the street.
"He was quiet and a nice enough neighbour. He came to our door to see if we could help when his phone went down recently."
His partner said: "Whatever happened in that flat, it must have been quietly. It is awful to think about."
Detectives have now launched an online portal for members of the public with information to contact officers directly.
The online portal that gives people access to a form to send information, pictures or videos directly to the team can be accessed by following this link
Detective Chief Inspector Ally Semple, from Police Scotland's major investigation team, said: “Officers continue to support Alan’s family at this difficult time.
"They’ve requested their privacy be respected as they try to come to terms with what has happened.
“We’re following a positive line of enquiry and are aware of social media content reportedly connected to the investigation.
“I’d like to thank everyone who has provided us with information so far but we still need the public’s help to establish exactly what happened to Alan.
“Any information you have, no matter how insignificant you think it might be, could be crucial to the investigation.
“I urge anyone who was in the Alexander Avenue area of Largs or around New England Road, Saltcoats, over the weekend and may have seen something suspicious to get in touch.
"Anyone in those areas with dashcam or private CCTV footage which could help, should contact police immediately.
“There will continue to be an increased police presence in the area as our enquiries continue and anyone with concerns can speak to these officers.”
In addition to the online portal, anyone with information can also call Police Scotland on 101 quoting reference 3304 of 4 February.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.
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