The 22-year-old is understood to have been involved with Daiane Rodrigues, the girlfriend of Marcelo Santos, an organized crime boss, which prompted the attack.
After being seen by the criminal's gang, Bernardo and Rodrigues were taken to Timbau Hill, where they were tied up and beaten.
According to some witnesses, Rodrigues was shot several times in the leg and was only released from hospital on Thursday. The player was admitted to the Souza Aguiar Hospital and was also discharged on Thursday.
Vasco's sporting director Rene Simoes has revealed that he will offer his player all the support he needs after the incident.
"I spoke to Bernardo recently and our priority is to give full support to the player," he said. "Of course Vasco do not want his name involved in anything other than what he achieves on the sports field. Bernardo will receive support from the club while legal proceedings are being undertaken."