Muslim community leaders and police are in talks about security ahead of the biggest religious days of the year.

The Federation of Islamic Associations is worried about worshippers' safety after a spate of attacks before the festival of Eid.

Traditional men's clothing and electronic equipment were stolen from a mosque in Tauranga on Monday night and a car was torched outside the building some hours later.

The federation is worried the clothing could be used by someone to infiltrate Eid festival events this weekend.

Earlier, on Saturday, a hearse - or janaza van - parked outside a mosque in Upper Hutt had its windscreen smashed.

It remains unclear whether the events are linked.

The federation met last night to discuss security and safety and have spoken with police.

Its spokesperson, Dr Anwar Ghani, told Morning Report the feeling is that the incidents are isolated, however the meeting with police has helped offer the Muslim community assurance their concerns are being heeded.

"Our community is susceptible to hate-related crime, as we saw what happened a couple of years ago, so when something like this happens obviously it brings anxiety in the community."

He says members of the Muslim community are concerned and there's a need to be "safe [rather] than sorry", but the police are investigating the incidents and have reassured the federation they will be highly visible during the weekend's Eid celebrations.

Ghani's advice to others in the Muslim community is to "be alert, look out, make your own security arrangements, and police is there to assist us as well, as they have been in the past".

Police say they will have a big presence at the large gatherings happening around the country at mosques, community centres and stadiums.

-RNZ.