The Islamic terrorists have been targeting professional women and a number of Iraqi women in ISIS-ruled provinces have been executed by the organisation in the past. The lawyer, Sameera Salih Ali al-Nuaimy, was abducted from her home last week and tortured for several days before a masked firing squad executed her in public on Monday, said a UN statement.
The lawyer had condemned the ISIS's acts of "barbaric" bombing and destroying of mosques and shrines in Mosul, on her Facebook account.
The UN statement said that she was convicted by a kangaroo-court and her family has been barred from performing her funeral, said the statement.
Previously, two candidates contesting Iraq's general election in Nineveh Province were killed by ISIS men in July. Another candidate was abducted and nothing about her was heard ever since.