As a result, the midfielder did not travel with the Arsenal squad on their pre-season tour of Australia and China as he stayed at the club's training ground to continue his rehabilitation.
Brighton fell 2-0 to Manchester City in Saturday's late kick off, while Newcastle return to Premier League action on Sunday afternoon against Tottenham, where the need for another forward will or will not be established.
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Another official said that Siddharth had gone to the restaurant with his friends and had allegedly ordered beer at the restaurant. Apart from questioning restaurant staff, police was examining the closed-circuit television footage from the restaurant.
Brighton are now out of the running, but Newcastle are interested in a loan deal.
"Yes, because we have a congestion of strikers", Wenger said.
"I don't like to lose him because, for me, he's a top-quality striker but we have many strikers".
"At some stage, too much competition is not competition anymore".