5.7-magnitude quake strikes off Indonesia

A 5.7-magnitude earthquake has struck off Indonesia's Sulawesi island, the US Geological Survey says.

The quake hit at 5.41am (0741 AEST) on Tuesday 135 kilometres northwest of Gorontalo city at a depth of 46 kilometres.

The USGS' Prompt Assessment of Global Earthquakes for Response (PAGER) system estimated the risk of fatalities and economic damage as very low.