By CBS13 Staff

TRACY (CBS13) — A 21-year-old basketball coach was arrested after an alert mother notified authorities that he was sending sexually suggestive messages to her 14-year-old son, the Tracy Police Department said Thursday.

Donovan Zachary London of Discovery Bay was booked into the San Joaquin County Jail on Tuesday and faces charges of contacting a minor with the intent to commit certain felonies and arranging a meeting with a minor for sexual purposes. Additionally, London was charged Thursday with possession of child pornography after investigators discovered illicit items while serving search warrants, police said.

READ MORE: 'We Want To Take An Innovated Approach': Sacramento City Pilot Project Sets Aside $1M For Community To Spend

After being notified of the text messages, Tracy investigators continued communicating with London, who still believed he was texting the child, who plays on his team. While texting police, London allegedly agreed to meet with the boy for sexual interactions.

READ MORE: 'I Cannot Safely Return To Work': West Campus Vice Principal Dr. Elysse Versher Resigns, Citing History Of Racial And Sexual Harassment

Tracy police said London arrived at the arranged meeting location and was met by detectives instead.

MORE NEWS: 'The Saddest Thing I've Ever Seen': Community Shaken After 3-Year-Old Dies In Arden-Arcade Fourplex Fire

The basketball program London coached for is not affiliated with any schools, police said.