During the 20s, Sejanus gradually accumulated power by influencing Tiberius and eliminating potential political opponents, including the emperor's son, Drusus. When Tiberius withdrew to Capri in 26, Sejanus was left in control of the entire state mechanism as "de facto" ruler of the empire. For a time the most influential and feared citizen of Rome, Sejanus suddenly fell from power in 31, the year his career culminated with the consulship. Amidst suspicions of conspiracy against Tiberius, Sejanus was arrested and executed, along with his followers.