An 18-year-old youth allegedly hanged himself to death here after a group of boys accused him of stealing and tried to molest his sister when she intervened, police said on Sunday. Police said the incident occurred on December 7 evening when a hospital in west Delhi alerted them about the death of a Deepak. "We found that Deepak had committed suicide by hanging from a fan at his residence but no suicide note was recovered," Deputy Commissioner of Police Rajneesh Gupta said.