The Russian army has pulled out in a hurry from areas it occupied to the west of Kyiv.The BBC has gained access to places abandoned by Russian forces, shortly after their retreat, and has found evidence of atrocities, that could amount to war crimes.One shocking incident took place on the E-40 highway, just west of the capital, with the shooting dead of civilians attempting to flee. The BBC has also gained access to the nearby town of Irpin, which was heavily fought over but has now been abandoned by Russian forces.Clive Myrie presents BBC News at Ten reporting by Jeremy Bowen, west of Kyiv, and Orla Guerin in Irpin.