Published Saturday, 10 May 2014
The player has deleted his Twitter account. (© Getty)
The club suspended the teenager on Friday night pending further investigations, naming him on Twitter as Michael Bunting.
"This behaviour is totally unacceptable to everyone at Portadown FC as we share the grief & loss of this tragic young boys short life," the club said.
On Saturday, Michael Bunting issued the following statement through his club, after deleting his own Twitter account.
"I would like to issue a public apology on behalf of myself over an incident on social media yesterday were I made a cruel comment under a friends post about the death of Oscar Knox.
"First & foremost I would like to apologise to the Knox family & to my parents, friends, family & Portadown FC.
"I have caused a lot of pain & suffering to the Knox family, my parents & those at Portadown FC. I made a severe error of judgement & understand people's anger. I'll suffer the consequences of my actions & again I'm truly sorry."
It is understood police are investigating after a number of abusive messages were posted on social networks on Friday.
© UTV News