Luis Suarez appeared to handle the ball before scoring Liverpool's winning goal at Mansfield Town.
The Uruguay international appeared to handle the ball as he scored the Anfield team's second goal after Daniel Sturridge had opened his account early in the game.
However, Matt Green clawed a goal back for Mansfield in the 79th minute, which, without Suarez's winner, would have earned the non-league side a lucrative replay on Merseyside.
Liverpool manager Brendan Rodgers defended Suarez's actions after the game, but it is not the first time the forward has been at the centre of controversy during his career.
Here we look at some of the striker's previous moments of controversy.
Is Suarez a victim or a perpetrator? Let us know what you think below.
Uruguay striker Luis Suarez handled on the line to deny Ghana a place in the 2010 World Cup semifinals.
With Uruguay and Ghana heading for extra time in their 2010 World Cup quarterfinal after Diego Forlan had cancelled out Sulley Muntari's opening goal, the African side thought they had scored a late winner.
Dominic Adiyah rose in the area to head toward goal with Uruguay goalkeeper Fernando Muslera stranded after a goalmouth scramble. But Suarez pushed the ball away on the goal-line with his arm.
The striker was dismissed, but Asamoah Gyan then missed the subsequent penalty, and Uruguay eventually won in a penalty shootout.
Suarez claimed after the match that he had "the real hand of God," referencing Diego Maradona's infamous handball against England in the 1986 World Cup finals.
Luis Suarez bit an opponent during his time with Ajax.
Bakkal appeared to stand on the Uruguay international's foot, which prompted Suarez to move towards his opponent and bite his shoulder.
Suarez was given a seven-match suspension by the Dutch Football Federation, who took into account a one-match ban for his dismissal in a game earlier in the season.
Luis Suarez challenges Patrice Evra at Anfield in October 2011.
Javier Hernandez scored an 81st-minute equalizer, as Manchester United claimed a point at Liverpool in October 2011. But the game faded into history once Patrice Evra made racism allegations against Luis Suarez.
After a month-long investigation into the incident, the Uruguayan striker was hit with an eight-match suspension and a £40,000 fine for racially abusing the France international.
Rather than consigning the incident to the history books, Suarez reignited the racism row when he did not shake hands with Evra before the return league fixture at Old Trafford.
The incident prompted a furious reaction from United manager Sir Alex Ferguson and a pro-Suarez rant from former Liverpool boss Kenny Dalglish.
Luis Suarez made a gesture to Fulham fans after the game at Craven Cottage last season.