Instagram has confirmed no action will be taken against a man who sent sectarian abuse to Republic of Ireland and Celtic defender Shane Duffy and mocked his father's death.

Last month Duffy was sent sectarian and abusive messages on the social media platform.

The Derry man shared a screenshot of the messages, which contained sectarian insults and expletives, and mocked the death of his father last year.

In sharing the messages, the 29-year-old commented: "There's abuse which is fine but surely there's a limit."

Instagram investigated the incident and on Wednesday, they told Sky Sports News that they considered it to be an isolated incident as far as the individual involved was concerned, highlighting that he had deleted the messages and subsequently apologised.

In mid-February Instagram announced stricter rules around racist and discriminatory abuse on their platform. 

"Our rules against hate speech don't tolerate attacks on people based on their protected characteristics, including race or religion," a statement read.

"We strengthened these rules last year, banning more implicit forms of hate speech, like content depicting Blackface and common antisemitic tropes. We take action whenever we become aware of hate speech, and we're continuously improving our detection tools so we can find it faster.

"Between July and September of last year, we took action on 6.5m pieces of hate speech on Instagram, including in DMs, 95 per cent of which we found before anyone reported it.

"We're announcing that we'll take tougher action when we become aware of people breaking our rules in DMs.

"Currently, when someone sends DMs that break our rules, we prohibit that person from sending any more messages for a set period of time. Now, if someone continues to send violating messages, we'll disable their account. We'll also disable new accounts created to get around our messaging restrictions, and will continue to disable accounts we find that are created purely to send abusive messages."