The striker celebrated both goals by crossing his wrists and was joined in doing so by Ivory Coast team-mate Didier Drogba.
FA Check Out Chelsea-Boro Video Footage!
The striker celebrated both goals by crossing his wrists and was joined in doing so by Ivory Coast team-mate Didier Drogba.
Chelsea swiftly denied there was any political motivation behind Kalou's gesture and insisted he was not showing support for the recently-freed Ivory Coast activist Antoine Assale Tiemoko.
An FA spokesman: "We are going to look at the relevant footage."
The FA have been quick to clamp down on controversial gestures, with Ipswich's David Norris fined £5,000 last year for making the same gesture in support of former Plymouth team-mate Luke McCormick, who was jailed for seven years and four months after causing the death by dangerous driving of two young brothers.
Everton midfielder Tim Cahill also used a 'handcuff' celebration last March, following his goal against Portsmouth. It was dedicated to his jailed older brother, Sean, who received a six-year sentence for kicking a man during a fight.
FIFA banned players from making any political statements or protests on the pitch in July 2002 after Liverpool stars had worn T-shirts in a show of support for striking dockers.