​Three women, including a friend of Italy’s prime minister, Giorgia Maloney, were killed on Sunday when a man pulled out a gun and opened fire at a meeting of the bloc in Rome, Reuters reported.

Maloney posted a photo on Instagram of herself with Nicoletta Golisano, one of the victims. “For me, she will always be so beautiful and happy,” Maloney wrote next to the photo.

“It’s not fair to die like that.”

Check out this Instagram post

A post shared by Giorgia Meloni (@giorgiameloni)

Police have arrested a 57-year-old man who was restrained by other tenants after he fired a gun during a session at a bar in the city’s Fidene district.

The suspect was a local resident who had a series of disputes with the tenants’ association, a witness told Rai News.

“He entered the room, closed the door and shouted ‘I will kill you all,’ and then started shooting,” Italian news agency Ansa reported, citing another witness.

Four other people were injured in the gun attack, at least one of them seriously.

Maloney said the shooting range where the suspect took the weapon used in the attack has been closed and is being investigated by authorities.