SAN ANTONIO, Texas -

San Antonio police say an off-duty officer has died in a bicycling accident after striking a tree.

Police spokesman Douglas Greene tells the San Antonio Express-News the officer was biking for recreation when struck a tree Saturday afternoon near the Jack White Trailhead.

Greene says the officer struck the tree with his face. Officers and the Bexar County medical examiner are still investigating whether any other factors contributed to the unidentified officer's death.

The officer's body was discovered by a jogger who immediately alerted authorities.