The UK government threatens Spain with legal action over the imposition of additional border checks in Gibraltar.
Spain's Ministry of Health reports an additional 324 COVID-19 deaths, the country's largest one-day increase. The country's death toll stands at 1,326, with 24,926 cases, the second highest in Europe.
The Spanish government and the UK government reach an agreement on Gibraltar whereby Spain lifts its threat of boycotting Sunday's summit on Brexit. Prime Minister Pedro Sánchez says there are now "sufficient guarantees" that any future decisions regarding Gibraltar would be made with Spain.
Spain's Foreign Minister José García-Margallo y Marfil says Spain will seek to jointly govern Gibraltar with Britain. Gibraltar, which is at the southern end of the Iberian peninsula bordering Spain, overwhelmingly voted in favour of Britain remaining in the EU.
The Royal Navy's Sabre 6 fires warning shots at a Spanish Guardia Civil vessel after it twice attempted to cut across the path of United States Navy submarine Florida 6 during an incursion into Gibraltar's territorial waters. Gibraltar officials say Spanish vessels regularly stray deep into its territorial waters and the Foreign and Commonwealth Office has attacked the incursions as provocative.