"There are a lot of eye-witnesses and with inputs provided by those injured in the blasts we are trying to prepare the sketches of suspects, which will be released shortly," the DGP told reporters.u00a0

Investigators were working on some clues, he said. On February 21, two powerful bombs made with ammonium nitrate exploded in the crowded Dilsukhnagar area, leaving 16 dead and injuring 117. The state government has formed 15 probe teams.