Groundbreaking U.S. rapper and Gang Starr co-founder Guru died Monday night, a month after the cancer-stricken artist collapsed and went into a coma, MTV reported.

The 43-year-old rapper, whose real name is Keith Elam, had been suffering from cancer for over a year. The report quoted a statement from Guru's camp that inferred the cause was complications from cancer.

“According to [producer] Solar, Guru suffered from the malicious illness for over a year and after numerous special treatments under the supervision of medical specialists failed, the legendary MC succumbed to the disease. Guru always tried to keep this harrowing diagnosis in private but in early 2010 he had to admit himself to hospital due to serious effects caused by the disease.”

Guru formed the group with DJ Premier in 1985, and they put out six albums, including the well-received "Daily Operation" and "Moment of Truth."