VALPARAISO | Police arrested four students from Valparaiso High School on Friday on charges of selling and possessing drugs. Officers confiscated 54 grams of marijuana and more than $100 used to buy and sell the narcotics, police said.

Officers were notified of the drug activity going on at VHS by other students at the school, according to the Valparaiso Police Department. Three officers began investigating the incident Friday and located a 12th-grade student who had purchased a pill from a 16-year-old student at the school, police said.

After further investigations and interviews with students, officers were directed to additional students involved with selling and purchasing drugs at the school, police said.

The arrests included a 14-year-old and a 15-year-old on a charge of possession of marijuana, and two 16-year-olds on charges of dealing a controlled substance and possession and dealing of marijuana. The students were held at the Porter County Juvenile Detention Center.

The Police Department also forwarded paperwork to the Porter County prosecutor's office for felony charges of dealing a controlled substance against an 18-year-old student at the school. No charges have been filed against him.

"The biggest positive outcome of this is that the students came to the police and the information officer," said Valparaiso police spokesman Sgt. Michael Grennes. "For the students to see something like that, know it's wrong and come to us is a positive thing."

Juvenile Probation Officer Ken Eguia, Resource Officer Sgt. Steve Jackson and Officer Todd Kobitz, who was working security at the school, investigated the incident.