Recalled to Bucharest, Macici was arrested and incarcerated at the Arsenal, together with other military leaders. He was put on trial in May 1945 for war crimes committed during the occupation of Transnistria, in particular, for the reprisals against the civilian population during the 1941 Odessa massacre. The charges were brought before the Bucharest People's Tribunal and the presiding judge, , by prosecutors Avram Bunaciu and Dumitru Săracu. The Tribunal sentenced him to death, but this sentence was later commuted to life in prison by King of Romania Michael I. After being detained at prisons in Jilava and Dumbrăveni, Macici was sent to Aiud Prison, where he was put in isolation regime at the "Zarca". He died there on 15 June 1950, and was buried in the penitentiary's cemetery.