The Saudi Arabian Grand Prix practice was delayed after a fire broke out near the track.
The second practice was delayed by 15 minutes because team bosses and drivers were called to a meeting.
There were reports of a fire at an oil depot 12 miles from the circuit.
According to the Associated Press, Yemen's Houti rebels claimed responsibility for an attack.
Red Bull driver Max Verstappen reported to his team that he could smell smoke.
The Dutchman said he smelled a burning feeling, but he wasn't sure if it was his car or another.
His engineer said they were happy it was not his car.
The second practice session started at 18:03.
The situation after the session will be discussed in a second meeting.
Domenicali told the teams and drivers that the weekend would go on as planned and that security for the grand prix has been a priority for the authorities.
He is likely to meet them again later on Friday to give them more information, as he said he would keep them updated through the weekend.