Green Day's Mike Dirnt has posted a message on his band's official website in remembrance of his birth mother, who died recently. The note, titled "R.I.P. Carol Alba Rowland," pays tribute to the bassist's biological mother, who in did not raise Dirnt and in fact only met her rock star son very recently.

His note, which was posted here with a selection of pictures of Rowland, reads:

Today we mourn the loss of "Carol Alba Rowland" my birth mother! As many of you know I was adopted. Over the last 10 years I have sought her out with the help of a good friend, only to meet her one month before her passing! I was blessed to have this moment as surreal as it was. The irony of this life never seize to amaze me, being that we were neighbors my entire life! We were able to share a cup of coffee, a cigarette and some smiles. She was a beautiful woman with a huge smile a hot temper and a kind heart. I will miss her as I did before, only now with some memories and a picture to go with the place in my heart! Love you mom!!!

Green Day cancelled a lengthy tour last year when frontman Billie Joe Armstrong was admitted into rehab for substance abuse issues, but the trek has since been rescheduled and now will kick off March 28 in Chicago. Check out their updated itinerary here.