Several explosions rocked Kyiv early Wednesday, according to AFP journalists in the city, with emergency services saying two residential buildings were damaged and two people wounded.

According to AFP, the blasts came as Russia intensifies attacks on the Ukrainian capital, which was placed under curfew late Tuesday due to what its mayor called a “difficult and dangerous moment.”

At least three loud explosions were heard just after dawn in the western part of the city, and thick clouds of smoke billowed into the sky.

"Two residential buildings were damaged in an overnight bombardment in the central part of Kyiv, Shevchenkivskyi district. Two people reported wounded, 35 evacuated," the Ukrainian state emergency service said on Telegram.

Images released by the emergency services showed the top corner of one building had been partially destroyed, while the other had damage and scorch marks to its roof and upper part.

It was not possible to immediately visit the scene as journalists are restricted from moving around the city during the curfew, which lasts until Thursday morning.