Ukraine President Volodymyr Zelensky said early Monday that a suspect had been arrested in the shooting of former speaker of parliament Andriy Parubiy.
Parubiy, a leading figure in the country's pro-European protest movements of 2004 and 2014, was shot dead Saturday in the western city of Lviv.
Zelensky said Internal Affairs Minister Igor Klymenko and security service chief Vasyl Maliuk had informed him of the arrest.
"The necessary investigative actions are ongoing...," he posted on social media. "I thank our law enforcement officers for their prompt and coordinated work."
In a subsequent post, after having spoken to chief prosecutor Ruslan Kravchenko, he added: "The suspect has given an initial testimony.
"Urgent investigative actions are currently underway to establish all the circ