A third man has pleaded guilty to taking part in a violent home robbery that left two women and two babies dead in Indianapolis. Zarumin Coleman, 24, of Indianapolis pleaded guilty Wednesday to conspiracy to commit robbery and being a violent felon in possession of a firearm. His sentencing is set for Dec. 17. Coleman was among those who broke into a Hovey Street home in 2008 for marijuana and money that weren't there. Ronald L. Davis, 33, pleaded guilty to four counts of felony murder in September. Tommy C. Warren, 27, pleaded guilty to conspiracy to commit robbery last month. Two others await trial.