This is never true. We can calculate the answer by using vector triple product. But let us solve it intuitionally.

Let us assume the angle between r and F is θ. The torque Γ produced will be in a direction outside of the plane of paper (just by using right thumb hand rule).

Now . So the angle between and F is always .

Hence, the statement can never be true. It can be antiparallel ( ),but can never be parallel.