There's crime and then there's the inconceivable

I'm assuming that Dale Cregan did kill two police officers in Greater Manchester today and handed himself in to police and public prosecutors to avoid being shot on sight by the rest of the police force, suitably tooled up.

Now we'll probably never know :

.....how he ended up thinking two unarmed police officers were a suitable target for a man with a gun and a hand grenade

.....where he got a hand grenade - a hand grenade, ffs - to use in an ambush

.....why he set up an ambush for these two police officers - if he did - but if it wasn't him, who was it?

.....what Greater Manchester Police who knew he was in Mottram did to track him down beforehand.

But whatever questions are asked in 'interviews', we will never hear how he ended up so depraved and deprived of human feeling that he thought it was okay to kill people.