The Hammers came out 2-1 winners however play had to be stopped because of a pitch invasion and the violence spilled out onto the streets which resulted in one man suffering a serious stab wound.
“I’ve been involved in difficult games and things happened. Here, I’ve played seven years and I’ve never seen it like this,” said the Italian coach.
“It’s certainly not good for football. I was completely shocked. Totally.
“I knew it was a game that meant a lot for the two sets of supporters, but I didn’t imagine it like this.
“What can I say? I’m a sport man. I love the game. I love to go on the pitch and try and make it exciting for the supporters and enjoyable for everybody to watch. This was beyond my powers.”