A Spanish judge barred Catalan authorities from confining about 160,000 people to their homes in the city of Lleida and seven other towns as coronavirus cases rose, saying the regional government had exceeded its powers.

The confinement decree issued by the Catalan regional government required people to stay at home unless they need to go out for work, see a doctor, buy groceries, or do sports. But the judge's decision overturned the legality of the decree.

People can move freely within the area, but they will still not be able to leave the area, under a lockdown decided earlier this month after an increase in cases, the judge said.

Since July 4, people in the Lleida area have been banned from leaving it, except for specific reasons such as going to or from work.

"What is proposed today goes far beyond a simple limitation of movement and seriously affects constitutionally recognized rights," Judge Elena Garcia-Munoz Alarco said in the ruling, rejecting the Catalan regional government's decision.

Despite the court's decision, Catalan premier Quim Torra called on the residents of the city of Lleida to follow his government's home confinement orders.

He told a news briefing it was impossible to accept the judge's ruling because of the risks involved, adding that his government would approve a decree to tackle the growing number of cases in the region.

Spain, which has been one of the European countries worst affected by the coronavirus, lifted a state of emergency at the end of June when the pandemic seemed to have come under control.

But with dozens of new clusters now seen around the country, regional authorities are taking new measures either to lock down small areas or make it mandatory to wear a mask everywhere in public.

La Rioja, Navarra, Aragon and Andalusia regions are set to make it compulsory from Monday to wear a face mask indoors and outdoors, authorities said, following a similar move in Catalonia, the Balearic Islands, and Extremadura.

In the rest of the country, masks are compulsory only if you cannot be at least 1.5 meters away from people.

People in the Lleida area have been banned from leaving it since July 4, except for specific reasons such as going to or from work. But the judge ruled that the move by the regional authorities - who have mounted a sustained campaign for independence from Spain - went too far and did not go through the right channels.

The national prosecutor had also criticized the Catalan government's decision.

(With input from agencies)