At what age is a baby able to grasp with its thumb and fingers?

At four months or five months a baby can pick up large objects, such as building blocks. She won't be able to let go of them easily, though. At six months a baby starts to hone her hand-eye coordination. A baby can rake an object toward herself, and will start moving objects from one hand to the other.

Very minute and important evidence needs to be collected in order together detail and figure out what had happened