Lebanese State Security arrested a man on Wednesday they believe was a financial official for Islamic State in Syria, a security source said.
The Syrian, arrested in the northern Lebanese city of Tripoli, was responsible for collecting money for the militant group in Albu Kamal, a city in eastern Syria, before Islamic State was routed from the area, the source said.
The arrested man, whom the source identified only as Saud, entered Lebanon through a legal border crossing using his brother's identity. It was not clear when he entered the country and whether he was planning any militant activities, the source said.
Lebanese authorities say they have disrupted a number of IS plots in recent months.