The NBA has taken a strong stance against homophobic insults since Kobe Bryant made an anti-gay remark last month

Chicago Bulls center Joakim Noah was fined $50,000 by the NBA after he made an anti-gay slur to a Miami Heat fan during his team's 96-85 playoff defeat on Sunday.

The league said in a statement that Noah had used "a derogatory and offensive term from the bench during the first quarter".

"The fan said something to me that I thought was disrespectful and I got caught up in the moment and I responded," Noah told reporters.

"I said some things that I shouldn't have said. I was frustrated and I didn't mean any disrespect to anybody."

The league has taken a strong stance against homophobic insults since Kobe Bryant made an anti-gay remark to a referee in a playoff game last month.

Bryant, one of the NBA's most-recognizable and highest-paid players, was fined $100,000 while the league now broadcasts commercials featuring players urging fans not to make anti-homosexual comments.