The Old Lady were sent out of the Champions League with 3-2 on aggregate.
“Chelsea tried to influence the referee’s decisions throughout the game,” Mellberg moaned on Viasat TV.
“Six or seven of their players surrounded him and was something of a personal attack.
“In my opinion, it was very unpleasant and anti-sporting behaviour.
“Chiellini’s foul was honest – he tried to get the ball and there was no malice there.
“He didn’t deserve to be sent off. It’s too bad, because this was my first chance to get far in the Champions League.
“We accept this result but, as I said, I did not like the way Chelsea players behaved.”