KYIV, Ukraine (AP) Ukrainian President Volodymyr Zelenskyy dismissed a longtime aide and several advisers on Saturday in a continuing reshuffle while Russia unleashed fresh attacks overnight.

Zelenskyy dismissed top aide Serhiy Shefir from his post of first assistant, where he had served since 2019. The Ukrainian president also let go three advisers, and two presidential representatives overseeing volunteer activities and soldiers rights.

No explanation was given immediately for the latest changes in a wide-reaching personnel shakeup over recent months. It included the dismissal on Tuesday of Oleksii Danilov, who served as secretary of the National Security and Defense Council, and Valerii Zaluzhnyi as head of the armed forces on Feb. 8. He was appointed Ukraines ambassador to the United Kingdom earlier this month.

Ukraines air force said Saturday that Russia launched 12 Shahed drones overnight, nine of which were shot down, and fired four missiles into eastern Ukraine.