The U.S. State Department would not confirm a report that Marco Rubio, secretary of state and national security advisor, would be traveling to Israel on Sept. 14 for meetings with officials.

However, a member of Rubio’s inner circle said that “where there’s smoke, there’s fire.” An hour later, Rubio published a cryptic tweet on his personal account, using emojis for smoke and fire, with an equal sign in between.

According to the report, Rubio is expected to attend the inauguration ceremony for the City of David’s “Pilgrims’ Road” archaeological site. The Roman-era street, which underwent an extensive and complex excavation, connects the Temple Mount to Jerusalem’s southern gates.