A 35-year-old man was bludgeoned to death with a cement block allegedly by his colleague in Girgaum in Mumbai over repayment of Rs 100, police said on Saturday.

Arjun Yashwant Singh Sarhar, who originally hailed from Rajasthan, used to do odd jobs in the locality and had borrowed Rs 100 from his colleague Manoj Marajkole (36), an official said.