A Russian court has ordered the pre-trial detention of a person suspected of killing a former military officer who commanded air operations during the siege of Mariupol.

Major Zaur Gurtsiyev, who was serving as deputy mayor of the southern city of Stavropol at the time of his death, was killed along with an acquaintance, Nikita Penkov, in a bomb blast on May 28. An explosive device is believed to have been in a bag carried by Penkov.

Telegram news channels with links to Russian law enforcement authorities claimed that Penkov may not have been aware that a bomb was inside his bag. Friends of Penkov, a former police officer, told BBC Russia that he had shown little interest in politics or the war in Ukraine.

On Friday, the Leninsky District Court in Stavropol ordered a suspect identified only as “Kh.” to remain in pre-trial custody until at least July 29. The court did not disclose the full names of the suspect or the victims, referring to them only by their last initials.

The suspect faces charges of aggravated murder and illegal trafficking of explosive devices, according to a court statement. The Interfax news agency reported Monday that terrorism is being considered as one of several possible motives behind the attack.