A former Lib Dem MEP, Ed McMillan-Scott, has criticised a Jewish Community group and the editor of the Jewish Chronicle newspaper in tweet.
The tweet was deleted shortly after being posted, and an apology was issued this morning.
ITV News are awaiting a response from the Liberal Democrats.
The comments were in response to comments posted on Twitter yesterday from Liberal Democrat MP David Ward, who said he would "probably" fire a rocket at Israel if he lived in Gaza.
More top news
A lawyer representing 35 families who lost loved-ones when a pilot deliberately crashed his plane 'can't explain' €25,000 offer.
Visitors were evacuated from a rollercoaster at Alton Towers after a power cut forced the ride to grind to a halt.
A town centre water fountain is under threat after repeated attacks by 'bubble vandals', costing hundreds of pounds to repair and clean.