08/06/2013 02:11 EDT | Updated 10/06/2013 05:12 EDT

Lac-Mégantic marks one month since deadly train explosion

One month after a train derailed and exploded, killing 47 people in Lac-Mégantic, Que. provincial police are turning over control of the disaster zone, at the centre of town.

This morning, Quebec provincial police officers inspected each building inside the restricted perimeter one more time before handing over control of the site to the municipality.

A private security firm hired by the town will patrol the area and ensure no one enters the zone that remains restricted.

“For everyone’s safety, anyone attempting to enter the area without authorization, for whatever reason, could face criminal charges,” Sûreté du Québec Sgt. Martine Asselin said.

She said ongoing excavation and clean-up work with heavy machinery is still taking place on the site and access remains limited for security reasons.

Tuesday marked exactly one month since the unmanned Montreal, Maine & Atlantic train rolled down the hill from where it was parked in nearby Nantes, derailed and exploded at the town core.

In total, 47 people are officially missing or dead. Work is still underway at the coroner’s lab in Montreal to identify the outstanding missing, but a search of the site ended last week after officials came forward and said there was nothing salvageable left at the scene.

Colette Roy-Laroche, the mayor of Lac-Mégantic, said this morning her first thoughts are of "the families of the victims and bereaved families evacuated" a month after the tragedy.

"It's very difficult for the entire community," she said.

"Even highlighting the very good initiatives that have been put in place in the last few week to allow us to start over, to find a bit of happiness, we still have an enormous task to accomplish."

According to the mayor, the lingering sense of injustice is ever present and many questions remain unanswered for the community.

Several investigations are still underway, including ones led by the Transportation Safety Board of Canada and Quebec provincial police, which are looking into the cause and culpability in the derailment.