Squinge is missing in action, apparently. Perhaps he was picked up by the INS for something.
The key words you see above are an expression that typically mean the person in question has not been seen or heard from in some time, nor has anyone come forth to offer any explanation for said absence beyond utter conjecture.
That's what it is to be missing. It's like if you were to say, "Gee, my car keys are missing."
If you knew where they were, they wouldn't be missing, now would they?
More to the point of the topic, I've been using Dizzy's weekly burglar mod probably very nearly since it was released and it works fabulously for upping the frequency.
As to actually being able to fight the burglar, I haven't tried it yet myself, but it's possible that the
Interact w/out greet hack (which is in the DC IIRC) may make this possible -though even if so, I suspect you would also have to have a negative relationship with the particular burglar NPC in question, and I'm doubtful that any outcome of you fighting the NPC would have any viable effect.
That is to say, even if it worked at all, I suspect the thief would merely finish the fight with your sim (win or lose) and then proceed to steal or be arrested as per usual.
-Kitt