Follow-up story from last week’s news about the Ukrainian terrorist attack in Monaco:

A woman suspected of carrying out last week’s bomb attack in Monaco that seriously injured a Ukraine-born business tycoon has been found shot dead near Kiev, in the latest twist in a case that has shaken the wealthy Mediterranean principality.

Ukrainian prosecutors said on Tuesday the woman had been found with a gunshot wound to the head and that two men had been arrested in connection with the case, including an officer with Ukraine’s military intelligence agency (GUR) and a former law enforcement officer.

On Friday, Interpol issued a red notice for 39-year-old Anastasiia Berezovska, a Ukrainian national who speaks German. The notice – a request to law enforcement agencies worldwide to locate and provisionally arrest a suspect pending extradition – said Berezovska was wanted by Monaco on charges of attempted murder, placing an explosive device in a public place with criminal intent, and criminal conspiracy.

Prosecutors said in a statement that Berezovska received cryptocurrency payments from the two men who were later arrested, leading investigators to treat them as “individuals potentially involved in the attempted murder in Monaco”. They added that the serving GUR officer was “acting on his own initiative” and did not inform his superiors about his contacts with Berezovska.

Prosecutors also released footage showing a blood-stained “torture chamber”, containing hammers and other equipment, which they said was discovered during searches of the men’s properties.

The Guardian could not independently verify the prosecutors’ account.

The affair could prove politically costly for Kiev. Any evidence linking members of Ukraine’s intelligence services to a bombing on European soil would be deeply damaging, coming as President Volodymyr Zelensky arrived at a Nato summit on Tuesday seeking to shore up western support while Russia continues its deadly bombardment of Ukrainian cities.

Prince Albert II of Monaco previously condemned the bombing as “an odious act” and said all the principality’s security services had been mobilised.

The victims have not been officially identified, but police and judicial sources told French media they were Vadym Iermolaiev, 58, a businessman originally from Ukraine who now holds Cypriot citizenship, his girlfriend and their son. Iermolaiev and his partner were taken to hospital with serious injuries, while the child sustained minor injuries.

French prosecutors allege Berezovska, who had been living in Germany, disguised herself as a man before placing an explosive device in the entrance hall of the family’s apartment building in Monaco.