Is it a coincidence that former President Moon Jae-in was given indictment without detention at this time, just before the South Korean presidential election?

On the 24th of this month, South Korean prosecutors indicted former President Moon Jae-in on bribery charges without detention. According to the prosecution, Moon engaged in bribery by the Communist Party, the largest opposition party at the time, during his presidency from 2018 to 2020.