prior to 04.03.2011 itself, the accused have conspired to kill the deceased. On 04.03.2011 at about 7.30 p.m. when the deceased came from his work, and called PW1, at that time PW2 to PW4 also came to PW'1 house. When PW1 came out from her house, A2 and A3 caught hold the deceased and A1 repeatedly caused stab injury with MO1. Though the family members are the natural witnesses, their evidence cannot be disbelieved merely because they are close relatives. But, it has to be analysed, whether such witnesses have witnessed the occurrence to believe their version. The entire evidence of PW1 when carefully scanned, she has stated that A2 and A3 caught hold the deceased from front and back side, at that time A1 caused repeated injury in the front side and back side. However, they have not made any attempt to prevent the attack. Thereafter, PW2 to PW4 sent the dead body of deceased in the ambulance and PW1 went to the police station. It is to be noted that PW1's evidence is against normal human conduct, when the husband of any wife who was attacked brutally in front of her eyes, the normal conduct of any wife is to make hue and cry and also to make some efforts to save him from the repeated attack. Even assuming that she was also threatened by the accused, her normal conduct would be at least to take the deceased to the hospital immediately. Whereas, PW1 not even accompanied the dead body of her husband to the hospital. According to her, she went to the police station and gave a complaint at 8 p.m. When her evidence carefully scanned, in the cross-examination she has stated that the police also came to her house and obtained a signature. Besides the police also recovered dagger in the place of occurrence and slippers of her husband. Her evidence makes it clear that immediately after the occurrence, the body was kept in the ambulance and the police also reached the place of occurrence and obtained her signature in the statement. Therefore, the First Information Report now projected by the prosecution itself creates a serious doubt. When Ex.P1/First Information Report carefully seen, in the earlier statement PW1 has never stated about the presence of PW2 as eyewitness. Though the First Information need not contain minute details, the fact remains that such omission cannot be ignored altogether, in view of evidence of DW2. It is further to be noted that Ex.P1 is also silent about PW2 to PW4 came to PW1's house only to see PW1 at the relevant point of time. The above omission also makes the evidence of PW1 doubtful.