I found things on my sons iPad?

[me]

I'm 33, a currently single dad, with 2 sons.
I took my 14 year old iPad off him for his behaviour and I was on it looking threw his apps and I went on an app called omegle wich seems to be a chat room and found that he had been talking to other boys about somthing called kik so was curious and found it and it seemed to be a bit like twitter or Facebook but he had been saying shots of sexual things and looking threw all the chats I found that they where sending naked pictures of eachother and eventually exchanging Skype addresses. I'm realy worried. I don't care at all if he is homosexual but I'm worried that he might arrange to meet up with someone or get involved with a pedofiles. (the boys are the same age)