Shorten concerned about Vic Labor stacking

Opposition Leader Bill Shorten wants the Labor Party in his home state to expel members who engage in branch stacking, amid allegations of rorting in Victoria.

Internal elections have been suspended and an investigation has been launched into the use of prepaid credit cards to pay for memberships, assistant secretary Kosmos Samaras said on Friday.

The investigation's results are due within a month.

Elections for Labor state conference delegates and some Victorian Labor groups will be suspended until February, Mr Samaras said.

Mr Shorten has written to Victorian Labor expressing his concerns about the branch-stacking scandal.

The practice "had no place in the ALP", Mr Shorten said in a letter to state secretary Noah Carroll, Fairfax reports.

"Those who contravene the integrity of our membership rules by branch stacking must be made to feel the full force of the disciplinary measures available to the party ... including expulsion," Mr Shorten wrote.

Mr Shorten has told the Victorian party he is "willing to direct any national resources" to assist them.