Yes, that's true. 4 is not that unlikely actually. He could have trespassed with no intention of doing harm. We don't know how the location looks like, but it's

Yes, that's true. 4 is not that unlikely actually. He could have trespassed with no intention of doing harm. We don't know how the location looks like, but it's possible that it was just an open construction job site, so trespassing would have been as simple as just walking in.