The victim was named as 25-year-old Tristian Lovelock, who was last seen alive with Mr Markham at 8pm on Thursday. The pair had been drinking at a friend's house in Basingstoke, Hampshire.
An investigation was launched after a head belonging to father-of-two Tristian Lovelock was found on Friday afternoon by a dog-walker at a recreation ground in the Southam area of Basingstoke.