KIEV, Ukraine (AP) — A cease-fire in east Ukraine is being upheld by both government troops and Russia-backed rebels, a senior Ukrainian official said Tuesday, in a first step toward enforcing a truce that has been riddled by repeated violations since it was imposed earlier this month.

Col. Andriy Lysenko, spokesman for Ukraine’s National Security and Defense Council, told journalists that the cease-fire had been upheld since late Monday, making it the first night in weeks that there have been no civilians killed or residential buildings shelled.