Jessica Ridgeway

So, I watched the press conference with the police in the Jessica Ridgeway case. After last night's discovery of a body, I thought this morning would be the police confirming it to be Jessica. Instead, they totally threw everyone for a loop and said that they will continue searching for her body. Then what or who is the body they discovered last night? Sources have told news outlets that it is Jessica, but maybe they are fearing some kind of serial thing going on? The police also said that Jessica's school would continue to be in lockdown. I guess they are really afraid there is someone out there targeting kids. That must also mean they are not really taking the tip seriously that someone saw Jessica in Maine in a car with Colorado plates.