LOS ANGELES — A pair of earthquakes rattled Beverly Hills this week, but neither did damage.

The second quake struck just after midnight Friday, reaching a magnitude of 3.4. It was preceded by Monday’s 3.2-magnitude quake.

Neither one did any damage, according to Beverly Hills police. But the second, on a fault line just a mile under the Earth’s surface, grabbed everybody’s attention. The US Geological Survey said more than 4,000 people checked in on its website to say they felt it. Dispatchers from police and fire agencies said they were inundated with calls.

The two quakes are probably related, Caltech seismologist Kate Hutton said Friday.

‘‘Technically, the first is a foreshock,’’ she said.

A pair of larger quakes, magnitude 4.0 and 4.1, struck the central California agricultural town of Huron about six hours after Friday’s Beverly Hills temblor, but if anybody felt them they did not say so. A police dispatcher reported receiving no calls.

Hutton said none of the quakes was related to a 7.6-magnitude temblor that struck Costa Rica this week.