be just being opportunistic here. they may of course know something. they may have had some contact with the perpetrator. we had a case in germany in july. an axe attack on a train where there is a very similar worded claim by isis. and in this that case the axe attacker had actually been in contact with an isis handler and then eventually uploaded a video playing responsibility. so not clear yet. but what we can say is there's really been no public articulation of any evidence from the german investigatory side of any link between any side and terrorism. they don't have the evidence at this point. they don't have a suspect. they don't even have an image of a suspect that they can take to the public at this point. so they are really back at square one having released this other individual who had nothing