A geophysicist is looking at whether hydraulic fracking caused a 4.4-magnitude earthquake recorded on Saturday near Fox Creek, Alta
"We have to take time to analyze the records," said Jeff Gu, an associate professor at the University of Alberta.
"But from earlier events in the same area ... we found a strong correlation between the timing of these events, early events from late 2003, with three injection wells west of the town of Fox Creek."