Could it be this easy? Red Robin would like to think so, but he was smarter than that. He would check up on this for a certainty, but would proceed cautiously until he had more concrete evidence than just the word of Oswald. Though having a name and general background to connect the killer was helpful, it still did not answer the question that was the most important to him. Even more than the identity of the killer.
The why.
The motive.
Because there had to be a reason that this Orhan stole the gun, and specifically shot Bruce Wayne of all people.
"Do you have any idea why he would single out Bruce Wayne?"