Gummersbach (dpa / lnw) – Three months after the death of an 83-year-old man in a fire in a residential building in Gummersbach, his grandson is in custody for murder. The 83-year-old died in hospital one day after the fire on July 13. An arrest warrant was issued on Friday against the 21-year-old young man who also lives in Gummersbach. He was accused of intentionally setting fire to his grandfather’s home, police said. Investigations into the background to the crime and the motive for the crime are ongoing.