US and other country officials told the New York Times that Israeli intelligence managed to trap with small amounts of explosives bombs bought by the Lebanese Hezbollah movement from Taiwan and detonated them on Tuesday, killing at least nine people and wounding nearly 2,800.

The newspaper’s sources, who spoke on condition of anonymity, gave some details about the unprecedented operation, for which the Lebanese Shiite party has already blamed Israel.

The small devices from Taiwanese manufacturer Gold Apollo were intercepted by Israeli services before reaching Lebanon, according to the sources.

A few tens of grams of explosive material—up to 57 grams—were placed next to the battery of these buzzers, along with detonators, the report states.

At 15:30 in Lebanon a message that appeared to be sent by Hezbollah leadership reached the devices, causing them to beep for several seconds, and then the explosives were detonated, according to the sources.

More than 3,000 samples, mostly of the AP924 model, had been ordered by the Lebanese movement from Taiwan’s Gold Apollo, according to the Times.

The US newspaper’s information is consistent with the theory, put forward by several experts yesterday, that Israeli intelligence was able to infiltrate Hezbollah’s supply chain and plan the act.

An AFP source in the Lebanese movement said earlier yesterday that “the blasters that exploded were part of a batch recently purchased by Hezbollah, consisting of 1,000 pieces,” and that they had been “hacked at the source.”