Clone Baby (2010)

Several teenagers who were born on the same day are being killed and their organs removed. Though they don't look the same, they have the same DNA and are clones of each other, all bearing the same tattoo on their arms. When the clones come close to each other they will try to kill each other. The clones discover there were 11 of them and try to find out why they were created and also who is killing them and why. One by one the same fate falls on the remaining survivors..