Back in 2013, Kendrick Johnson died in a gym mat. They originally said it was an accident but investigators have been looking closer into it. There was recently an e-mail sent to the police officers saying that he was murdered. They do not know who sent this but now are looking into it. There are four suspects that they have really been pointing at. They have been brought up before in the investigation and will now be questioned more. In the e-mail tip, the person does not say that he or she witnessed the crime. However the person does say that they heard this information from someone else. They have already interviewed 2 of the 4 students named in the anonymous e-mail.
http://www.cnn.com/2014/03/21/justice/kendrick-johnson-death-investigation/index.html?hpt=ju_c2