Jets from a Saudi - led coalition targeted rebel Houthi positions in Yemen ' s Red Sea port of Hodeida early on Tuesday, port officials said. The jets destroyed cranes and warehouses at a main import hub for critical aid supplies to the country's north. There were also clashes further south overnight in Yemen's third city, Taiz, Arab television stations reported, as local groups opposed to the Houthis attempted to consolidate recent advances to take the city. As well as retaining a foothold in Taiz, the Houthis and allied army units loyal to former president Ali Abdullah Saleh control the northern highlands and Red Sea coastal plain as far south as Ibb, where coalition-backed forces advanced last week. Ibb is around 50 kilometers (30 miles) north of Taiz and 200 kilometers southeast of Hodeida. The port, which lies almost due west of the capital Sanaa, has become a focal point of Yemen's humanitarian crisis, which The International Committee of the Red Cross said last week the country was "crumbling" under. Aid groups have previously complained that a coalition naval blockade has stopped relief supplies entering Yemen. The coalition, led by Saudi Arabia with a big military role played by the United Arab Emirates, has accused the Houthis of commandeering aid shipments for war use. Anti-Houthi groups helped by the coalition have pushed the northern militia out of some southern provinces since late July, but while that has allowed aid to reach Aden in the south, the humanitarian crisis elsewhere remains critical. Besides advancing from the south, coalition-backed forces are also fighting the Houthis and Saleh's troops on a second front around Marib, northeast of Sanaa. Saudi Arabia fears a victory for the Houthis would be used by its main regional foe Iran to encircle Gulf states and undermine their security. The UAE condemned in a statement on the state news agency what it described as the occupation of its embassy in Sanaa by the Houthis on Sunday. The UAE said earlier this year it was shutting the embassy after Yemen's capital was seized by the Houthis.