Contact your local police department and make a report of the incident immediately.

Put a recent picture of your child on social media and send to the police. You will also want to make sure that National Center For Missing and Exploited Children have your child's picture and poster on the website.

Start dissecting all of your children's social media and if they play online games.

See if you can locate your child on the phone. If you can, let the know the location of the phone

Be diligent. No one is going to look for your child the way you do. Contact a non profit or group that specializes in finding missing children.

Make a list of all the people you know and your child knows. This will include family, friends, business associates,  neighbors, your children's friends, parents, coaches, etc.