def getRecentDetections(dbManager, timestamp):
    """Return all recent (last 15 minutes) detections

    Args:
        dbManager (DbManager):
        timestamp (int): time.time() value when image was taken

    Returns:
        List of alerts
    """
    sqlTemplate = """SELECT * FROM detections where timestamp > %s order by timestamp desc"""
    sqlStr = sqlTemplate % (timestamp - 15*60)

    dbResult = dbManager.query(sqlStr)
    return dbResult