Tottenham Hotspur apologised to Liverpool for posts mocking the collapse of the Merseysiders' Premier League title challenge that appeared on the hacked social media accounts of the London club.
Shortly after Liverpool squandered a 3-0 lead by letting in three goals in the closing minutes of a 3-3 draw at Crystal Palace on Monday, a taunting comment appeared on Tottenham's Twitter feed.
It read: "Brutal but very funny. The biggest capitulation since Newcastle in the 90s."
That referred to the 1995-96 Premier League season, when Newcastle let a 12-point lead slip and finished runners-up to Manchester United.
The tweet was accompanied by a Vine video which cut from Liverpool captain Steven Gerrard leading an inspirational team huddle after victory over Manchester City to his slip to gift fellow title contenders Chelsea the opening goal in their recent 2-0 win at Anfield.
That in turn was followed by footage of Dwight Gayle's equaliser for Palace, a close-up of the 3-3 scoreline from Sky television's coverage and an unrelated clip of Palace boss Tony Pulis laughing in a BBC interview.
Spurs removed the post and tweeted: "We are currently looking into a security issue where our official Vine account has been compromised.
"We apologise to anyone offended by a recent tweet, which was immediately deleted. This post was not tweeted by anyone affiliated to THFC."
Liverpool have not won the domestic title since 1990 but you have to go back to the 1960-61 season, when Tottenham completed a league and FA Cup 'double', to find the last time the north London side were crowned champions of England.