Actor Joseph Gordon-Levitt has hit out at an article in this month's GQ magazine which made claims about his late brother.

The article said that his brother died of an "alleged drug overdose." His older brother Dan Gordon-Levitt died in 2010 at the age of 36 though no cause of death was made public.

Having seen the article in GQ, the Inception and 3rd Rock From The Sun actor took to his Tumblr page to vent his frustration. He posted, "Using the word 'alleged' technically allows the writer to say whatever she wants. The 'allegations' to which she must be referring were made by a handful of gossip websites."

He continued, "They are factually incorrect according to the coroner's office and the police department... My parents and I are disappointed with what the article chose to focus on regarding this sensitive subject."

GQ have yet to comment.