One of Bernie McFadden's other sons took to Facebook to slam those behind the attack, branding branded those responsible "gangsters".
Using the hashtag 'Not In My Name', Declan Bradley - a "proud republican" who has been pictured with Sinn Féin northern leader Michelle O'Neill - wrote: "First of all, to the scumbags who entered my Ma's house (a woman who has been a Republican all her life) and grabbed her by the throat, before going on to shoot the wee brother in both legs for no reason and is now in hospital receiving treatment, I hope your days are numbered.
Declan Bradley posted a message on his Facebook page after the shooting
He added: "Finally, I wish the wee brother a speedy recovery and get well soon."
When contacted by the Sunday World this week, Declan declined to add to what he'd already said about the attack.
But Sunday World inquiries in Creggan soon revealed the INLA was responsible for the early morning shooting.
And we also learned that under a long-established protocol, the republican terror group behind it was given the go-ahead by the so-called New IRA.
A veteran republican source in the area told us: "There's absolutely no doubt the INLA would have had to have this passed by the New IRA before carrying it out." He added: "It's all about money these days."
As the Sunday World revealed two weeks ago that leadership of the INLA in Derry is based in a caravan park across the border in Co Donegal.
And from there, the republican terror group identifies drugs dealers who are then 'taxed' in return for being allowed to sell their wares in republican areas of the city.
This latest incident makes a further mockery of the claim that the INLA decommissioned its weapons several years ago.
Derry INLA leaders have recently been seen driving around the city in top-of-the-range vehicles before returning to their base across the border.
The gun attack was widely condemned by police and politicians.
A detective sergeant for the PSNI said: "We are appealing to anyone who may have been in the area and who witnessed the incident of may have CCTV or dash cam footage to contact detectives on 101 quoting ref. Number 6 of 05/04/22."
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