Jailed Russian opposition politician Alexei Navalny has been tracked down to a penal colony north of the Arctic Circle, his spokeswoman said on Monday, after supporters lost touch with him for more than two weeks.

Navalny, 47, was tracked down to the IK-3 penal colony in Kharp in the Yamal-Nenets region, about 1,900 kilometers north east of Moscow, spokeswoman Kira Yarmysh said. Navalny's lawyer managed to see him on Monday, Yarmysh said.

"This prison will be much worse than the one that was before," Yarmysh said from Vilnius via video call. "They are trying to make his life as unbearable as it possibly can be."