The Supreme Court will then decide whether to refer the police's findings to Prosecutor-General Paulo Gonet, who will either formally charge Bolsonaro and put him on trial or throw out the investigation.
The former right-wing president has denied all claims he tried to stay in office after his narrow electoral defeat in 2022 to his rival, leftist President Luiz Inácio Lula da Silva.
Bolsonaro has faced a series of legal threats since then.
Several ex-Bolsonaro administration officials were accused of involvement, including former Defence Minister Walter Braga Netto, ex-National Security Adviser Augusto Heleno, former Justice Minister Anderson Torres, and the head of Bolsonaro’s Liberal Party, Valdemar Costa Neto.