Esmail Gerami-Moghaddam, Karoubi’s spokesman, was quoted by ILNA as saying judiciary authorities has sealed off the premises and told Karoubi and others to leave.
"Around 3 p.m. local time, judiciary agents arrived at Karoubi's office, in Jamshidieh district (northern Tehran), seizing documents such as computers and video tapes," he said.
"They ordered Mr Karoubi and his visitors to leave the building," he said.
Karoubi protested to recent revelations of Kahrizak death camp in southern Tehran. Many men and women were known to be subjected to most horrendous tortures including sexual assaults by members of the security forces.