A woman is killed in shelling near Mariupol , the local government says . Shelling and explosions heard near Donetsk airport , city government says . Ukraine accuses Russia of sending troops to help pro-Russian rebels. `` There is so much confusion , '' a Mariupol resident says .
A woman is killed in shelling near Mariupol , the local government says . Shelling and explosions heard near Donetsk airport , city government says . Kiev and pro-Russian rebels have blamed each other for ceasefire breaches . `` There is so much confusion , '' a Mariupol resident says .