Iran denied on Friday any connection to the July bombing in Burgas, Bulgaria, that killed six people, including five Israelis.

Bulgarian investigators on Tuesday released a report on the bombing, which blamed the Lebanese-based terrorist group Hezbollah, a known agent of the Islamic Republic.

The Iranian ambassador to Bulgaria, Gholamreza Bageri, told reporters in Sofia that Tehran opposes all forms of terrorism. “This has nothing to do with Iran,” he said. “We are against any form of terrorism and strongly condemn such actions.”

The Bulgarian report made no mention of an Iranian connection to the bombing, despite Israeli expectations.

Hezbollah receives military training, financial support and weapons from Iran. According to the Middle East Forum, a conservative American think tank, the US estimates that Iran provides the Shi’ite terror organization with $60-100 million annually. Hezbollah is also backed by the Bashar Assad regime in Syria.

The group has been accused of several major terror attacks in the past 20 years, including the 1994 bombing of a Jewish community center in Buenos Aires, Argentina, that killed 85 people.