luciana berger
But Luciana Berger's CLP denies the charge.
Ian Lavery also warns MPs considering leaving party would "almost certainly" lose their seat.
The party's deputy leader said behaviour towards the Jewish MP was "intolerable".
The Jewish Labour MP is facing a vote of no-confidence in her constituency.
The five things you need to know about politics today
A crunch meeting will take place in parliament next week.
People's Vote group admits there is not yet enough support in parliament.
The PM unveiled her long-term plan for the NHS in Merseyside today.
Young people need stable homes, safe streets, regular incomes, opportunities for travel and study, affordable transport, and a real stake in the future
The Labour leader has been blasted for the 'inexcusable' comments.