Yemeni authorities said Saturday that a shipment of explosives seized earlier this week in Indonesia was legal and had been heading to a private oil company drilling in Yemen. Indonesian troops on Wednesday found detonators and 63 tons of explosive powder on a Chinese ship after it broke down in the Malacca Strait. Indonesian police said that they were investigating the cache, and stated the shipment appeared to by heading to Yemen. Yemen confirmed this, and said the cargo was being shipped to an oil firm it identified as Z.B.E.B, which it said was drilling in a province south of the capital. "All explosives brought into the country for these purposes are under the control of security forces," an unidentified Foreign Ministry official was quoted as saying by the official Yemeni news agency, Saba. He said the explosives were necessary for excavation works.