Eyewitnesses failed to identify eight suspects in connection with the blasts in the ancient city of Varanasi that killed 23 people, police said yesterday. All the suspects were later released.Police were confident that two of the eight men, Sadiq Ali and Ansar, were linked to the blasts since they bore a striking resemblance to the computer-generated sketches. The six others, also picked up in the state Friday night, were their acquaintances. "They (suspects) were paraded a number of times. But the witnesses could not recognize even one of them, and all the eight were freed after questioning, G.K. Goswami, senior superintendent of police, said. "There is no concrete evidence, no definite clue," he said. The eight suspects all hail from neighboring Bihar state, Goswami said.