DARTMOUTH -- Just two-days after a rare 2.6 magnitude earthquake was confirmed by Natural Resources Canada, another rumble was reported in Dartmouth early Tuesday morning.

"All of the sudden I heard a big boom, right, like a cannon going off, but it felt right in the corner of my house where I was sitting," said Colleen Kelly, a local resident.

According to Natural Resources Canada, what people felt was an aftershock from Sunday's earthquake in the same area. The aftershock registered 2.6 magnitudes on the Richter scale – the same strength as Sunday's earthquake.

"It is a little unusual for an aftershock to be the same magnitude as the foreshock," said Natural Resources Canada seismic analyst, Nick Ackerley. "It's much more common for the aftershocks to diminish in amplitude and frequency with time."

Police received several calls on Tuesday around 12:42 a.m. from residents in the east Dartmouth area, with reports that their homes were shaking and they were hearing sounds similar to what an explosion would sound like.

Crews responded to the Westphal and Montebello neighbourhoods, where the calls were coming from, to check for potential damage or hazards.

Ackerley says this may not be the only aftershock Dartmouth residents feel.

"This still could be a fairly normal aftershock sequence where subsequent aftershocks are just smaller and smaller, or, it could be the beginning of a swarm of sorts. It's just too soon to say," said Ackerley.

Experts say if there is another aftershock, or any prolonged shaking, remember to drop, cover, and hold.

With files from CTV Atlantic's Emily Baron  Cadloff