THIRUVANANTHAPURAM: Anonymous people have thrown beer bottles at ABVP state committee office. The windows of the office have been broken in the incident. Nobody is injured. The incident happened at 12:30 near general post office in Kunnumpuram, near Vanchiyoor. A two-storey building owned by a private person, near the office was also attacked. Windows and switch boards in the buildings were destroyed and the attackers have also damaged many bikes, parked near the office. The incident happened after the houses of several SFI-DYFI leaders were attacked in Attingal. The houses of SFI state president V Vineesh and ABVP Attingal area secretary Shyam were attacked on Wednesday.