Jane Onyanga-Omara

USA TODAY

Another strong coastal earthquake rocked Ecuador on Wednesday as officials raised the death toll to 525 from a powerful weekend temblor.

The latest quake, measuring magnitude-6.1, struck at 3:33 a.m. local time and was centered offshore, about 15 miles west of Muisne, according to the U.S. Geological Survey. There were no early reports of injuries or damage. A magnitude-5.5 tremor also hit the area Tuesday.

The quake Wednesday follows a devastating magnitude-7.8 earthquake Saturday in the South American country. Ecuador’s National Prosecutors Office, in raising the death toll, said at least 11 foreigners are among the dead. At least 15 victims have not been identified.

The Cuban Public Health Ministry said three of its doctors died in the quake when a building they were in collapsed in the city of Pedernales, according to the Associated Press.

New earthquake hits coastal Ecuador

Speaking Tuesday, Ecuador's Defense Minister Ricardo Patiño said: "It's the worst tragedy in 60 years," CNN reported. "We're facing the most difficult phase right now, which is rescuing victims and recovering bodies," he added.