Members of the Christchurch Muslim community were allowed back into the Al Noor Mosque on Saturday following last week's terror attack after police returned it to the building's caretakers.

Representatives of the community were seen gathered around the gates of the mosque, talking with police and carefully looking over hundreds of floral tributes laid out along the mosque's gates.

(Photo taken on March 23, 2019 shows one of the tributes left outside the Al Noor Mosque in Christchurch. The image shows Daoud Nabi who allegedly greeted the gunman by saying "Hello, brother," just before he opened fire.)

The building is one of two mosques targeted in the March 15 attack, in which alleged gunman Brenton Tarrant opened fire on hundreds of people gathered for midday prayers.

In total, 50 people died in the mass shooting -- New Zealand's worst ever terror event -- 42 of whom were from the Al Noor Mosque.

Salma Sarik, 29, who traveled to Christchurch from Auckland to support the local community, was one of the many people waiting outside to re-enter the mosque.

"This (the mosque being reopened) completed us. This is our place of worship and we will have to go back one day," she said.

A friend of Sarik's family, Muhammad Suhail Shahid, was one of the people killed at the mosque.

"We will not let that terrorist steal our faith," she said.

Community members of the Linwood Mosque, the other building targeted in the attack and located five kilometers away, also returned to their mosque later in the day. The two mosques are not open to the public yet.

Police had been working "relentlessly" to prepare both mosques to be handed back to the community in time for Friday prayers, but the process was subsequently delayed.

Jordanian royal family member Prince El Hassan bin Talal is scheduled to visit the Al Noor Mosque later in the day to lay a floral tribute.

Four Jordanian nationals were killed in the mass shooting, according to local media reports.

Earlier on Saturday, thousands of people gathered in Hagley Park, near Christchurch Hospital, for a "March for Love" rally.

(Photo taken on March 23, 2019 shows people participating in the "March for Love" rally in Christchurch.)

People were encouraged to dress in colorful clothing to show solidarity with the entire city, which continues to grieve after the attack.

"You're just so proud of your country and everyone for what's happened," a 57-year-old march participant who gave her name only as Debbie said during an acapella rendition of the New Zealand national anthem.

The March for Love gathering was organized by three high school students who had organized the local Christchurch School Strike 4 Climate rally.

Young people from across the city were gathered in Hagley Park for the climate change strike at the time the gunman began his attack on the mosques less than two kilometers away.

"So much has been broken in our city: our buildings, our roads, and our hearts," said one of the organizers, Manaia Butler, 16.

"But having this march, it shows when we unite, how resilient Christchurch can be."