Police and security forces have arrested over 20 more people from Malakand division including Swat following the attack on Malala Yousafzai.According to sources, the police have arrested them on suspicion. Most of the arrested belonged to Alakoon, Kabal, Mingora and other adjoining areas of Swat.The police have shifted the suspects to undisclosed location.Over 140 people have been arrested so far after the attack on Malala in Swat on Tuesday.