Serial.println error

Just messing around with my Arduinos today and I am getting a weird error. Error message: sketch_sep12a:25: error: invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'

    Serial.println("INTRUDER ALERT: timeStamp:" + hours + ":" + minutes + ":" + seconds);
       //the line above is line 25 in my code. if you would like to see the rest, just let me know.

If anyone can help please do so. Thanks!

You can't concatenate string like that. Do individual prints or use sprintf()