The pieces of circumstantial evidence which have been found proved and held as forging an incriminating chain against the accused are as under :- (i) last seen together; (ii) abnormal conduct of the accused; (iii) recovery of underwear and baniyan (which was found to be stained with semen and blood group 'B' which is also the blood-group of the deceased); (iv) False plea of alibi; and (v) Accused absconding since the date of offence