ignition failure

[collegefb]

Hi, I am having a problem with my 2001 Nissan Quest.

Last night after turning the car off and taking out the key, the dash indicator lights stayed on. When the door opened it still made the open door sound, as if the engine was on. I made sure that all the lights were off and the dash dimmer was low but that had no effect. I unplugged the battery for the night. This morning the problem still exists after plugging the battery back in. The ignition is also stuck. I put the key in, but it will not turn.

Can anyone please help me out