Arsenal manager Arsene Wenger was left frustrated after victory over Leicester City.

Wenger was left counting the cost of his side's 2-1 victory over Leicester on Tuesday after both Alexis Sanchez and Aaron Ramsey were forced off with injuries.

"Sanchez got a knock on his knee," Wenger said.

"From the moment he got this knock, he was never really comfortable.

"I don't know for how long he will be out and whether he will be out or not. I haven't seen the doctor."

On Ramsey, Wenger continued: "It looks like it (a recurrence of a hamstring injury). I don't know how bad it is yet.

"Just visually, it didn't look good - when a guy stops straight away and sits down, that's not good news.

"There's a recurrence now of a few muscular injuries and it's difficult - we haven't found out why."