San Diego police are asking for the public's help in finding a man who allegedly molested two girls at Wal-Mart stores.

In each case, a white man, 25 to 30 years old, allegedly fondled a young girl who was separated from her parents inside the store. One girl was 5 years old, the other 6.

The first instance occurred April 1 at the College Grove Wal-Mart. The second occurred Monday at the Kearny Mesa store, where the suspect was seen leaving in a late-model, dark-colored truck with a silver- or chrome-colored storage box in the bed.

Anyone with information is asked to call the San Diego Police Department's child abuse unit at (619) 531-2260 or San Diego County Crime Stoppers at (888) 580-8477.