Insert an identity matrix into a larger dimension of null matrix

hellow everyone ! Suppose i have an identity matrix .

 I=eye(3) which will produce 
 I = [1 0 0
      0 1 0
      0 0 1]
 Now i want to insert I into a (5X5) null matrix such that my result will be 
N = [0 0 0 0 0 
     0 0 0 0 0 
     0 0 1 0 0
     0 0 0 1 0
     0 0 0 0 1]
 How could i achieve this efficiently .Thanks in advace

Answer 1

[Rick Rosson]

   N = diag([0 0 1 1 1])

[pradeep kumar]

@ Rick Rosson . Thank you Sir