Zayn Malik 'angry' after being accused for substance abuse

One Direction singer Zayn Malik is "angry and upset" after being accused of having a drug problem.

The 21-year-old is "gutted" to have missed a trip to America to promote One Direction's new album "Four" after falling ill at the weekend and was horrified when his bandmates were quizzed on live TV about the unsubstantiated allegations, reports femalefirst.co.uk.

"I'm really angry and upset by what was said on 'The Today Show'. I was really ill at the weekend, that's why I couldn't fly to America.

"As soon as I'm feeling better, I'm going to join the guys and carry on with the promotion for the album. I was gutted to have to miss album release day. But I'm going to be back as soon as I can," Malik told The Sun newspaper.

The hitmaker spoke out after "Today Show" host Matt Lauer queried his absence.

"There have been rumours of substance abuse, what's going on?," asked Lauer.

Niall Horan shook his head in anger while Liam Payne replied: "No, he's just got a stomach bug, he's okay. He's just at home. He just needs to rest. He's okay.

Malik, who was the subject of a leaked video earlier this year in which he appeared to be smoking a marijuana-laced cigarette, recently missed another group commitment, leaving Payne, Horan, Harry Styles and Louis Tomlinson to shoot acceptance speeches for the three MTV Video Music Awards they won earlier this month, without him.