The Chairman of Federation of Islamic Associations says the Coronial inquest into March 15 is not the time for political posturing.

Winston Peters is refusing to apologise for falsely tweeting that Kiwis only just found out about the terrorist's pre-attack email to the Beehive.

It was revealed at a press conference the next day.

Abdur Razzaq Khan says it was also in the Royal Commission's report, which he says shows Peters didn't read it.

"And to come out after so many years now, on the day when people are trying to find out what actually happened to their loved ones- I thought that was very insensitive."

LISTEN ABOVE

• Winston Peters should 'seriously look at himself': Islamic spokesperson
• Peters claims Ardern never told him of terrorist's email in bizarre post
• Winston Peters responds to criticism over mosque attack tweet