Gennady Kernes, the mayor of Ukraine's second-biggest city, Kharkiv, is in hospital undergoing emergency surgery after being shot in the back, Interfax reported, quoting the mayor's spokeswoman.
"The doctors are fighting to save his life," the agency quoted the spokeswoman, Tatiana Gruzinskaya, as saying.
More top news
Former athletes who were treated as 'lab rats' in a state-sponsored programme of doping in East Germany are speaking out.
A nurse has told ITV News how the courage of the Manchester bombing victims gave her the strength to carry on.
A warm evening with late sunshine and feeling very summery