A powerful earthquake measuring 7.4 on the Richter scale shook El Salvador's coast on Monday, briefly prompting a tsunami warning.
The quake struck late on Sunday local time, some 111 km (68 miles) offshore, according to the US Geological Survey.
Initial reports said it caused no major damage or casualties.
The Pacific Tsunami Warning Center issued and subsequently cancelled its tsunami alert for El Salvador, Costa Rica, Nicaragua, Honduras, Guatemala, Panama and Mexico.
The Pacific Tsunami Warning Center initially said that the earthquake had spawned a potentially destructive tsunami. However, later reports said the tsunami was much smaller than initially projected, international media inform.