An investigation is underway into the death of a man found bound in his East Flatbush home Monday.

Investigators say Nolan Green's aunt called 911 after she was unable to get in touch with him for a couple of days. Police discovered Green, 51, dead with his hands bound behind his back and a garbage bag tied over his head. A medical examiner is working to determine the cause of death.Police believe Nolan may have been dead for several days inside his home at 215 Lenox Rd. Police officers say they found the apartment ransacked. Anyone with information about the crime is urged to call Crime Stoppers at 1-800-577-TIPS. Police are offering a $1,000 reward for information that leads to an arrest.