Murdered in 1981 alongside Luis Navarro, Maruzzo is venerated by Catholics and his beatification received approval from Pope Francis and was celebrated in Izabal, Guatemala on 27 October 2018.

Maruzzo and his twin brother Daniele joined the Order of Friars Minor in 1940 (first doing their novitiate) and both received their ordination to the priesthood from Cardinal Angelo Giuseppe Roncalli—the future Pope John XXIII—on 21 June 1953.

He and Navarro were at a catechetical meeting when the pair were ambushed and shot dead at 10:40 pm on 1 July 1981.

The investigation was conducted by the Izabal apostolic vicars under Gabriel Peñate Rodríguez bishop from its inauguration on 31 January 2006 until its closure later on 15 July 2008.

The theologians advising the congregation issued their approval to the argument that the two were killed in hatred of the faith in their meeting held on 31 May 2016, while the members of the C.C.S.

Pope Francis confirmed their beatification in a decree promulgated on 9 October 2017 in an audience with the congregation's prefect.