A man who in the mid-1990s killed the heir to the Italian fashion house Gucci was arrested on suspicion of shooting his own son on Tuesday before attempting to kill himself in the Italian province of Pisa, the police said.

Investigators were still trying to piece together what happened in the small town of Santa Maria a Monte, the province’s Carabinieri police said in a news release on Wednesday.

Both the man, Benedetto Ceraulo, and his son, Gaetano, were hospitalized, with the father under guard and in serious condition on Wednesday, officials said. The son was reported to be not in critical condition, but no specifics were given.