Police are yet to make any breakthrough in the explosion outside the Delhi High Court even as investigators conducted searches in an Uttar Pradesh locality to check whether the perpetrators bought chemicals from the market there.

Sources said investigators conducted raids in Pilkhua market to know about the sale of ammonium nitrate and potassium chlorate which is commonly used in dying factories there.

They said the police conducted searches in some houses in Ashok Nagar area in Pilkhua where Pakistan-based terrorist Abdul Karim Tunda used to live in a rented accommodation two decades ago.

Two persons were detained in this connection. - PTI