Several of us went to the door, but found it locked.
I tried the double glass door, but found it locked.
If someone came knocking at his door he'd find it locked, and would leave without a second thought.
She continued to the front gate, but found it locked.
But should an officer happen to try those doors, he would now find them locked.
He went to the door of the room, found it locked.
I made my way to the gate and found it locked.
She tried the handle of the door and found it locked.
He walked up the steps and tried to open the large front doors, but found them locked.
He tried the door into the office, and found it locked.