A major earthquake woke up Mexico and Guatemala Monday morning, leaving at least four people dead.

The U.S. Geological Survey said the quake struck around 6:23 a.m. local time on the Pacific Coast about a mile from Puerto Madero on the Guatemalan border.  The quake was initially measured at 7.1 but reduced to 6.9.

Two people died in the Guatemalan town of Pati when their home collapsed on them.  A third was confirmed dead from a heart attack brought on by the stress of the quake.  A wall in Huixtla crushed a man when a building collapsed.

Guatemalan President Otto Perez Molina said on the radio that a newborn was killed when hit by a collapsing wall but emergency personnel did not confirm it.

Massive power outages have left most of Guatemala without electricity.  Early reports had hundreds of homes with significant damage and utility poles down for hundreds of miles.