What happened: Formula 1 reported a red flag after Fernando Alonso had a sideways moment at the chicane during Monaco Grand Prix running. The incident left debris on the circuit, forcing officials to halt the session while the track was cleared.

Why it matters: At Monaco, any stoppage can reshape track position and timing because space is tight and clean laps are difficult to rebuild. It also adds another interruption to a week involving Fernando Alonso, whose session rhythm now depends on damage checks and the restart window.

What to watch: Watch for confirmation on whether Alonso's car needs repairs and how much session time remains after the cleanup. Stewards or race control updates will clarify when running can resume.