Lock assembly with two hook devices

A lock assembly includes a casing, two pivotable members pivotally mounted in the casing and meshed with each other, two linking rods, and two hook device each including a hook member and a rocker arm that is pivotally mounted in the casing. Each hook member has a first end pivotally connected to an associated rocker arm and a hooked second end that is passable through an associated one of two openings of the casing. When either pivotable member is pivoted, each rocker arm and each hook member are actuated such that the hooked second end of each hook member is moved between a retracted position in the casing and a locking position out of the casing. Damage to the hooked second ends of the hook members during closing of a door is prevented.