Los Angeles, April 27 (IANS): Fans got worried when Hollywood star Brad Pitt was seen with a large cut under his left eye when he arrived at the 3rd annual Light Up the Blues Concert, but the actor assured the bruise was a result of minor incident.

"This is what happens when you try to run up steps in the dark, with your arms full, wearing flip flops," Pitt said in a statement to people.com.

“Turns out if you then try to stop your forward momentum with your face, the result is road rash. Regardless, I wasn't going to miss the Autism Speaks benefit the night after - wonderful people and I was honoured to be a part of this important event,” he added.

The 51-year-old took the stage at the 2015 Light Up the Blues Concert to benefit NGO Autism Speaks, held at the Pantages Theatre in Hollywood on Saturday evening.

During the event, he spent $23,000 on a Fender guitar signed by the performers from the event, all of whom suffer from autism.