Fr. Adriano da Silva Barros, parish vicar of São Simão Parish, in Simonésia was found dead on the night of the 14th of October.
The crime took place near the church of Saint Roch, where Fr. Malgesini was serving. An investigation is underway.
El Salvador is considered one of the most violent countries in the world, with the highest homicide rates.
A priest, Father Oscar Juárez, was found dead on Wednesday 15 July.
Father Nilo is one of several priests who have been killed in in 2018 in the Philippines.
The stolen mobile phone was traced and thus made it possible for the police to arrest the killer.