CCTV footage released by Greenpeace shows a number of men in balaclavas reportedly break into their offices in Murmansk, Russia.
The group said a mock cage, due to be used in a stunt as part of a campaign today, was taken from their premises.
Russian authorities are holding 30 activists and journalists following the capture of their boat during a stunt to highlight the environmental impact of Arctic drilling.
A court in Russia has charged the activists, and accompanying journalists, with piracy. They are currently imprisoned in jails in Murmansk, in the very north of Russia, and could face up to 15 years in jail.
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The hunt for murder suspect Jed Allen has ended after police found his body two days after discovering his mother, stepdad and sister dead.
A woman who had been searching for her mother for more than 10 years has been reunited with her after posting an appeal on social media.
Although a dull start can be expected, it will brighten up in eastern areas. Especially to the south.