Kherson was the only regional capital taken by Russia after February's invasion.He added that residents had been working to remove "any traces of the occupiers' stay" from the streets, including Russian symbols.On Friday afternoon, Alexei Sandakov appeared to be still adapting to the new situation on the ground, commenting: "No-one is going to sleep tonight."But he said he remained "cautious", citing the possibility of Russian retaliations, and referring to a missile attack in Mykolaiv earlier in the day, which allegedly killed at least seven people.Mr Sak vowed to retake further territory from Russia, including land that has been occupied by the neighbouring country since 2014."