BAGHDAD — Reinforcements are being rushed to the key Beiji refinery in northern Iraq amid heavy fighting with the Daesh militants who have been trying to capture the facility for months, Iraqi officials said Tuesday. But Brig. Gen. Saad Maan, a spokesman for the Interior Ministry, denied during his appearance on state television that the Daesh terrorist group had taken over major parts of the refinery, the country’s largest, as some Iraqi media reported. Beiji is on the road to Mosul, Iraq’s second largest city and the main center of the Daesh power in Iraq. If Iraqi forces hope to eventually take back Mosul, they have to secure Beiji — the scene of stubborn fighting for months. — AP