Police are asking the public for help in finding a missing teenager

WINFIELD, Ind. – A Silver Alert has been issued in the search for a teenager missing in Lake County.

Winfield Police are searching for 18-year-old Trinity Sue Thomas.

Thomas is 5 feet tall, weighs 135 pounds and has brown hair and brown eyes.

She was last seen wearing a pink dress with spaghetti straps.

Thomas was last seen in Winfield on Friday, May 3, at 5:30 p.m. She is believed to be in extreme danger and may require medical attention.

If you have any information, you are asked to contact Winfield police at 219-779-9326 or 911.

There are certain standards that a person’s disappearance must meet in order for police to issue an Amber Alert or a Silver Alert.

Amber Alerts are aimed at children under 18 who are believed to have been abducted and are in danger. Police also need information about a suspect and their car to issue an Amber Alert.

Silver Alerts apply to missing and endangered adults or children. They are much more common in missing people. Just last year, Silver Alert standards were expanded to include children.

In both situations, these warnings must be issued by the police.