FILE PHOTO: Andriy Parubiy, who at the time was Ukrainian Parliamentary Speaker, reacts during a session of parliament in Kiev, Ukraine, May 22, 2019. REUTERS/Valentyn Ogirenko/File Photo
The body of former Ukrainian parliamentary speaker Andriy Parubiy, who was killed this morning, lies on the ground, amid Russia's attack on Ukraine, in Lviv, Ukraine August 30, 2025. REUTERS/Roman Baluk
A police officer guards at the site of a murder of former Ukrainian parliamentary speaker Andriy Parubiy, who was killed this morning, amid Russia's attack on Ukraine, in Lviv, Ukraine August 30, 2025. REUTERS/Roman Baluk

(Reuters) -Ukraine President Volodymyr Zelenskiy said early on Monday that a suspect has been arrested in the murder of former parliamentary speaker Andriy Parubiy, a crime that shook the war-torn country.

"The suspect has given an initial testimony," Zelenskiy said on the Telegram messaging app. "Urgent investigative actions are currently underway to establish all the circumstances of this murder."

Parubiy, 54, was shot dead in the western city of Lviv on Saturday in what Zelenskiy called "a horrific murder" and a "matter of security in a country at war."

Parubiy had been parliamentary speaker from April 2016 to August 2019, and was one of the leaders of protests in 2013-14 calling for closer ties with the European Union.

"I thank law enforcement for their swift and coordinated work. All the circumstances of this horrific murder must be uncovered," Zelenskiy said.

The alleged shooter was detained overnight in the Khmelnytskyi region in western Ukraine, Minister of Internal Affairs Ihor Klymenko said on Telegram.

"Many details cannot be shared at this time," Klymenko said. "I will only say that the crime was carefully planned: the victim’s movements were studied, a route was mapped out, and an escape plan was thought through."

(Reporting by Lidia Kelly in Melbourne; Editing by Bill Berkrot)