The tweet has since been deleted and shadow international trade secretary Barry Gardiner has added that he had lodged a formal complaint to Labour bosses.
This morning I saw the reports about not just the readmission of Derek Hatton but the tweets he has mentioned.
I wrote to the general secretary of our party, I lodged a formal complaint.
I understand that action has since been taken in respect of the complaint and I'm sure that I will be looking out to see precisely what appropriate action is taken in due course.
The seriousness of this story cannot be understated but given all the turmoil and upheaval that we are witnessing in Westminster on an almost daily basis, Twitter managed to find a way to see some humour in the situation.
Derek Hatton returning to the Labour Party. https://t.co/MEKqjv9RWg