(CNN) One of Libya's most prominent female politicians has been abducted from her home in Benghazi by an armed militia, according to her family, and has not been heard from for three days.

Seham Sergewa, a women's rights activist and a rare independent voice in Libya, was taken from her home on Wednesday, family members have told CNN, by a militia loyal to the leader of the Libyan National Army, Khalifa Haftar. An elected member of the House of Representatives, she'd been critical of the LNA's assault on the capital, Tripoli

According to family members, who asked not to be named for fear of retribution, more than a dozen masked and armed men arrived at Sergewa's's home at about 2 a.m. on Wednesday. One family member identified the men as part of a militia called the 106th Brigade, also known as Awlia Aldem.

Seham Sergewa is a women's rights activist and a rare independent voice in Libya.

As they searched for Sergewa, the family member said they shot her husband in the legs and beat up one of her sons. Both men are still in hospital, according to family members.

As they left the house, they sprayed graffiti on the walls -- including the group's name and a warning in Arabic: "Don't cross the line of the armies."

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