Pakistani authorities arrested three men today who were allegedly involved in the shooting of teenage activist Malala Yousafzai in Pakistan’s Swat Valley earlier this week. According to the Atlantic Wire the arrested men all named another man, called Attaullah, as the mastermid of the attack. Attaullah remains at large. On Tuesday, Pakistani Taliban members claimed responsibility for the shooting.

Malala Yousafzai is known for her outspoken criticism of Taliban atrocities. She was shot in the head after two men approached her school van on her way home from school Tuesday.

In early 2009, under a pen name, Yousafzai published a diary for the BBC that highlighted the Taliban ban against girl’s education in the northwest Swat district of Pakistan. Yousafzai was awarded a cash prize and an award for her courageous peace work to raise awareness by the Pakistani government in 2011. In that same year, Yousafzai was also nominated for an International Children’s Peace Price.