Yemeni authorities say four people were killed Tuesday by Iran-backed Houthi rebels attacking a vessel in the Bab el-Mandeb Strait. The Transportation Ministry of Yemen's internationally recognized government said the dead included three Pakistani nationals and an Indonesian. In a statement, the ministry said that the Houthis fired three ballistic missiles on the Yemeni commercial vessel. They are the first known deaths from Houthi attacks on shipping off Yemen in the latest bout of fighting in the Arab country. Houthis attacked the government-held port city of Mokha on the Red Sea and other areas of the country.