Pictures of boy stuffed in a bag then a box shown to court on six-year-old . Murder suspect Pedro Hernandez allegedly told police he choked Friday Etan Patz then tossed his body in a box . The body was never found . Etan went missing as he walked to school in 1979 . Defense attorneys start evidence on Monday , trial expected to end in April .
Pictures of boy stuffed in a bag then a box shown to court on Friday . Murder suspect Pedro Hernandez allegedly told police he choked six-year-old Etan Patz then tossed his body in a box . The body was never found . Etan went missing as he walked to school in 1979 . Defense attorneys start evidence on Monday , trial expected to end in April .