Waitemata District Commander Superintendent Naila Hassan is in Mecca on the invitation of King of Saudi Arabia to perform Hajj.

Naila Hassan is New Zealand's most senior police officer and came to prominence internationally after she gave an emotional speech at the vigil in Auckland after the March 15, Christchurch mosque terrorist attack that killed 51 worshippers and injured many.

Speaking from Mecca to media, Ms Hassan expressed her happiness and gratitude towards King Salman for inviting her to perform Hajj.

"As a Muslim, you just dream about seeing the Kaaba and going to Makkah and Madinah," she said in a video thanking Saudi King Salman for hosting the Christchurch pilgrims.

"When I saw the Kaaba this morning, I was breathless, I really was.

"But … as much as it's a journey for me, I'm here for the victims … I'm here particularly for the women and the widows that are here. I'm here to support them," Ms Hassan said on Monday, August 5, Arab News reported.

Hassan described how she and about 200 other pilgrims were welcomed with petals, singing and gifts. "I've never experienced anything like it in my life," she said.

Naila Hassan at the vigil held earlier in March addressed the crowd assuring them of providing support to the Muslim community and everyone affected. Ms Hassan was witnessed breaking down into tears on stage as she addressed a vigil for the victims.

Saudi Arabia's Islamic Affairs Minister Sheikh Abdullatif Al-Asheikh said on Sunday that hosting the Christchurch pilgrims as part of Saudi efforts to "confront and defeat terrorism" in all its forms, Arab News reported.

Hajj is one of the five pillars of Islam religion and is performed on the occasion of Eid-ul-Adha. This occasion sees millions of Muslim worshippers from across the globe travel to Mecca to perform Hajj pilgrimage.