Lebanese authorities detained a US-Israeli national in Beirut last week and later deported him, Lebanese security and judicial sources said on Thursday.
"Joshua Samuel, a US-Israeli journalist, was detained on October 5 and deported the following day," a judicial official said, requesting to remain anonymous.
A security official, who also spoke on condition of anonymity, said Hezbollah members detained a man called "Joshua Samuel Tartakovsky with US and Israeli passports" and handed him over to the military intelligence, but said he was not a journalist.
He had gone to Beirut's southern suburbs, which Israel has pounded in recent weeks, presenting himself as a "supporter of Gaza and Hezbollah", the security source said. He claimed he wanted to tell Hezbollah about "Israeli army tactics", the source said.
A spokeswoman at the US embassy told AFP: "We are aware of the arrest and due to privacy reasons have no further information to provide."