FOND DU LAC, Wis. (CBS 58) -- North Fond du Lac police are asking for the public's help in locating a missing and endangered person. 

Police say 18-year-old Allan Leiva-Leiva was last seen around 9:30 p.m. Sunday, May 4, after leaving his parent's house-near Polk and Prospect Avenue- with a bag of tools.

He reportedly said he was going to do a TikTok challenge and help some girls that were in trouble. 

Officials say Allan has not returned to school this week, and his phone does not ring. 

Allan's last tracked location was Chilton, Wisconsin on May 6. 

He's described as a Hispanic male, standing 5'9" and weighing 167 pounds, with brown eyes and short, wavy black hair. 

Allan was last seen wearing a white long-sleeved shirt with red stripes on the sleeves and blue jeans. 

Police say it is extremely abnormal for him to run away from his family. If located, police say to stop, hold, and contact North Fond du Lac police at 920-929-3760.