Accounts emerge of heroism in New Zealand mosques; bodies to be released

* Police find another victim inside Al Noor mosque

* 50 wounded, including 12 in intensive care

* NZ plans to reform permissive gun laws in wake of attack

* Church services held around the country for victims (Updates with comment from survivor)

By Tom Westbrook and Praveen Menon

CHRISTCHURCH/WELLINGTON, March 17 (Reuters) - Accounts emerged on Sunday of heroic attempts to tackle a gunman who slaughtered 50 people at two mosques in New Zealand, as authorities prepared to begin releasing the bodies of victims to their families for burial.

Australian Brenton Tarrant, 28, a suspected white supremacist, was charged with murder on Saturday. Tarrant was remanded without a plea and is due back in court on April 5 where police said he was likely to face more charges.

Friday's attack in the city of Christchurch, which Prime Minister Jacinda Ardern labelled terrorism, was the worst ever peacetime mass killing in New Zealand.

Ardern also said she wanted to talk to Facebook, as footage of the attack on one of the mosques was broadcast live on Facebook, and a "manifesto" denouncing immigrants as "invaders" was posted online via links to related social media accounts minutes before the violence began.

Amid the shock, outrage and recriminations that have consumed New Zealand over the past two days, tales of heroism and self-sacrifice emerged.

Abdul Aziz, 48, was hailed for confronting the shooter at the second mosque and preventing more deaths.

Aziz, originally from Afghanistan, ran outside after the shooting started and picked up a shotgun that the gunman had dropped. The gun had no shells in it, he said.

"I chased him," Aziz said. "He sat in his car and with the shotgun in my hands, I threw it through his window like an arrow. He just swore at me and took off."

Another man, Naeem Rashid from Pakistan, was seen on the gunman's video confronting the shooter before he was killed, the BBC reported. Rashid's 21-year-old son, Talha, was also killed.

The death toll climbed to 50 when police found another body at the Al Noor mosque, where more than 40 people died after a gunman burst in and opened fire on worshippers with a semi-automatic rifle with high-capacity magazines, driving to attack a second mosque.

Police rammed the suspect's vehicle and arrested him as he drove away from the second mosque in the suburb of Linwood.

Police Commissioner Mike Bush said the man was apprehended 36 minutes after police were alerted and he was the only person charged in connection with the shootings. Three people detained earlier were not involved, he said.