At least three ruling Telangana Rashtra Samithi (TRS) activists were injured seriously, when activists of Majlis Ittehadul Muslimeen (MIM) attacked them, at Rajendranagar, last night. They attacked with knives and sticks, locals said. They entered houses and attacked even women. As the women complained to Rajendranagar police, two MIM activists were taken in to custody. They are being questioned. The attack took place mainly due to old rivalries, it is learnt. Police are on the look out for eight others, who are on the run.