Lawyers Raimondo Paparatti and Mauro Danielli were speaking after a four-hour interrogation of Luigi Preiti, who wounded three people including a police officer who risks being paralysed for life.
"He thought about committing suicide in his hotel room but then changed his mind, thinking that it would be seen as one of many suicides linked to the crisis," Paparatti told reporters.
After being arrested, his lawyers said Preiti had asked police: "Why didn't you shoot me?"
Preiti was "deeply shaken and often sobbed" during his interrogation by a judge, he added.
The judge decided to remand Preiti in custody.
