3rd piece of knife used to attack Saif Ali Khan found km away from actor's home

A third piece of a knife used to attack and injure Saif Ali Khan at his residence last week was recovered from a trench near Bandra lake, which is around a kilometre away from the actor's home. One piece of knife, measuring 2.5 inches, was recovered from the actor's body during surgery. Another piece was found at Saif's home.