A Russian court Tuesday released on bail a Brazilian Greenpeace activist, the first non-Russian to be set free from the so-called Arctic 30 detained for a protest against oil drilling, the group said. "Ana Paula Alminhana Maciel (BRA) to be released on bail says court in St Petersburg," Greenpeace said on Twitter, citing the decision of a Saint Petersburg court. "First non-Russian." Earlier courts in the city freed three Russian activists on bail but ordered an Australian activist to remain in pre-trial jail until February 24.