Yemen officials: Saudi-led airstrikes hit factory in western city; 23 workers killed

Yemeni men hold a burning portrait of Saudi King Salman, with Arabic that reads, "Horn of Satan," as scores of Yemeni expatriates, including students and clerics, protest against Saudi-led airstrikes on their homeland, in front of the Saudi Embassy, in Tehran, Iran, Wednesday, April 1, 2015. (AP Photo/Vahid Salemi) (The Associated Press)

Yemeni men, among them some injured in violence in Yemen, chant slogans while holding posters of Shiite Houthi rebel leader Abdul-Malik al-Houthi, and placards denouncing the U.S. and Israel during a protest against Saudi-led airstrikes on their homeland, in front of the Saudi Embassy in Tehran, Iran, Wednesday, April 1, 2015. The placards in Arabic read, "God is great, death to America, death to Israel, damn the Jews." (AP Photo/Vahid Salemi) (The Associated Press)

Scores of Yemeni expatriates, including students and clerics, chant slogans while holding a poster of the Yemeni Shiite Houthi rebel leader Abdul-Malik al-Houthi, during a protest against Saudi-led airstrikes on their homeland, in front of the Saudi Embassy, in Tehran, Iran, Wednesday, April 1, 2015. (AP Photo/Vahid Salemi) (The Associated Press)

Yemeni officials say Saudi-led warplanes bombed Shiite rebel positions in a western city, setting off explosions and drawing return fire from anti-aircraft guns. Airstrikes also hit a factory in the city and 23 workers died there.

The bombings came as the Saudi-led campaign against Yemen's Shiite rebels entered its seventh day.

The officials say the early Wednesday strikes targeted Hodeida, a port city on the country's western, Red Sea coast controlled by rebels known as the Houthis.

The officials suspect the factory, which makes dairy products, was being used as a rebel weapons cache. It was not immediately known if the workers died from the airstrikes, return fire or subsequent explosions.

The officials spoke on condition of anonymity because they were not authorized to speak to the media.