When I was a witness to a crime

I was sitting at work working on my laptop staring into the computer screen. Suddenly a colleague for mine says: - But what are they doing? She walked up to the window and stared out. I also stood up and looked out from the 6th floor. On the road outside beside a roundabout I saw two young men sitting on the same motorbike with helmets so you could not see their faces. One steered the bike and the other had a a light blue bucket in his hand. What did the bucket man do? He throwed out cal traps (fotanglar = Swedish) in both lanes. This was to stop traffic when the cars tires would be damaged. I picked up the phone and phoned the police. I said: - There is a robbery in progress somewhere here in Kista. The police asked if we saw the bike´s registration plate but as we were so high up we saw them from above. That was the only thing they wanted to know. The bike disappeared and luckily both drivers in both lanes saw the cal traps/fotanglar and stopped the cars and started to pick them up and throwed them in the ditch. Later on we heard that there had been a robbery at a nearby head office for post and stamps. 

See this article about the robbery. I am one of the witnesses they are talking about:

http://www.google.se/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=1&cad=rja&sqi=2&ved=0CC8QFjAA&url=http%3A%2F%2Fwww.sydsvenskan.se%2Fsverige%2Fstort-padrag-efter-ran-i-kista%2F&ei=4G4rUuaCGcKO5ATP3IGYDg&usg=AFQjCNGPCimdKj822s5wY6siKA6ylIMLLw&sig2=jIqvAgNFNEhHw6My3swVGg&bvm=bv.51773540,d.bGE