Part of Dubai Metro's Red Line was down briefly on Sunday.
Services between the new Dubai Investment Park and Expo stations were halted due to an unspecified issue.
Shuttle buses were provided to transport affected passengers, while teams investigated the problem. The service resumed shortly after.
“To Dubai Metro users, please be informed that the metro service is back to normal between the Dubai Investment Park and Expo stations. Thanks for your co-operation,” the RTA said.
Both stations only opened on June 1 as part of Route 2020 to the Expo site.
The Red Line now allows passengers an uninterrupted journey from Al Rashidiya Station all the way to the Expo 2020 Station. But only those with clearance to access the Expo site in Dubai South will be permitted to use the two until the official opening of the World Fair in October.
Travel time between Al Rashidiya and Expo 2020 stations will be an hour and 14 minutes. The new route serves about 270,000 people.
Sheikh Hamdan tours Dubai Metro - in pictures
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Sheikh Hamdan bin Mohammed, Crown Prince of Dubai, on a tour of the new metro link -
The Dh11bn megaproject extends 15 kilometres on the Red Line from the Jebel Ali Metro Station to the Expo 2020 Station -
The extension is set to open later this year -
It will link seven stations -
The Dubai metro opened in 2009 -
Since 2009, the metro has served more than 1.5 billion riders across 2.6 million journeys -
Sheikh Hamdan Mohammed tours Route 2020 Project. The AED11 billion project, linking seven stations, extends 15 km on the Red Line from the Jebel Ali Metro Station to the Expo 2020 Station.
