Two kids were killed and 33 other civilians wounded in Houthi missile strikes on Yemen’s central Marib city on Sunday, the internationally recognized government’s state news agency said.

Two missiles targeted military areas in the city, residents said, while a third landed near a residential district that houses military headquarters of the Arab coalition.

The state news agency said a four-year-old girl and her two-year-old brother were killed when a missile hit their house, seriously injuring their mother. It said three other women and five children, ages ranging from seven months to 16 years, were among those wounded.

There was no confirmation from the Houthi movement, which is pressing an offensive to seize gas-rich Marib, the internationally recognized government’s last northern stronghold. United Nations-led efforts for a nationwide ceasefire have stalled.