Inter Milan coach Walter Mazzarri blamed match officials for their 1-0 defeat at Lazio.
Mazzarri says Lazio defender Andre Dias should have been sent off in the first half.
"We knew it was going to be a difficult game," he told Sky Sport Italia. "This is the sort of game that is decided on the basis of right and wrong decisions.
"There was a clear penalty and a red card for a foul on Rolando from Dias, but never mind.
"We were unlucky. It was a clear penalty. If you ask me I'll tell you what I think.
"But we were also naïve for Klose's goal - although he did well and it was a good finish."