The Regional Court of Murmansk, Russia has rejected an application made by lawyers for two Greenpeace International activists and a freelance photographer to be released on bail.
A further 27 cases requesting bail will be heard later this week.
Some 28 Greenpeace International activists, a freelance photographer and a freelance videographer were seized by Russian special forces on the ship Arctic Sunrise in international waters 19 days ago.
Their arrests followed a protest at the Gazprom Arctic oil platform Prirazlomnaya.
More top news
A British couple with a combined age of 194 are to become the world's oldest newlyweds when they marry in the summer.
Weekend weather starts wet for some
Manchester United manager Louis van Gaal says Ryan Giggs will almost certainly succeed him at Old Trafford.