Church bells are tolling 50 times in a small Quebec town in memory of the 50 people who died after a horrific train derailment a week ago.

The chimes at Ste-Agnes Church rang Saturday, followed by a minute of silence in the picturesque lakeside town devastated by the runaway train.

Besides the 28 confirmed dead, 22 others are presumed dead.

When the clock struck 1:14 a.m. Saturday morning, it marked one week to the minute that a locomotive and 72 tankers carrying shale oil began slammed into downtown Lac-Megantic after rolling down a slope and gathering speed. The crash and ensuing explosions destroyed homes, businesses, and the Musi-Cafe bar that was filled with people.

The Montreal, Maine and Atlantic train had been parked overnight a few miles away.