Update (7 November 2012):
Reports on the damages caused by the 7.4 magnitude earthquake  that hit off Champerico on the Pacific coast of Guatemala  on Wednesday, November 7, 2012, are coming in quickly through Twitter .
The earthquake was also felt strongly in neighbouring Mexico and El Salvador.
Many users, like Nuestro Diario (@NuestroDiario ) [es] and Esner Navarro (@esnernavarro ) [es], are sharing photos of the damage in San Marcos, where at least eight people have died, according to the latest reports  [es] by Prensa Libre.
Guatemalan President Otto Pérez Molina (@ottoperezmolina ) [es] has been using Twitter to send updates on the situation. These are his latest tweets at the time of writing this post:
@ottoperezmolina : Se declara alerta roja nacional, se suspenden actividades públicas y se recomienda evacuar edificios.
@ottoperezmolina : We are declaring a national red alert. Public activities are suspended and we recommend evactuating buildings.
@ottoperezmolina : Se trabaja para poder brindar ayuda a las personas afectadas. Estamos a la espera de datos oficiales.
@ottoperezmolina : We are working to bring help to those who have been affected. We are waiting for official information.
The Red Cross in Guatemala (@CRGuatemalteca ) [es] is also sharing information on Twitter.