...being pretty wriggly on the facts of the case:
Detective Chief Inspector Mark Wrigley said on Friday: 'At the moment we have no other information than that. It was an unprovoked attack, certainly.
'It happened very, very quickly and Sven and his young friend were attacked for no reason that we know of at this time.
'There were six who attacked the two young men. The two who have been arrested have now been released on bail.'
And aren't named?
'We are still conducting our inquiries to confirm the identity of all of those who took part.
'This group of young men came to that area and moved together as a group before the offence.
'The offence took place, I believe they left initially in a group together as well, so I believe they acted together.
'The group of males have been described as a mixture of white males and black males and that's the descriptions varying from different witnesses at the moment.'
There must be CCTV covering the area. Why haven't any images of these 'young men' been released to jog witnesses memories?
Mr Wrigley said there will be extra patrols in areas where violent attacks have been carried out.
'We are doing everything we can in terms of dealing with young people who think it's okay to go out on the street with knives,' he said.
'Statistically, if you carry a knife, you are more likely to be a victim and obviously you're more likely to use it, so don't do it.'
Strong words, there.