Sharm-El-Sheikh, the popular diving resort in the Sinai, Egypt, was hit by several car bombs at 01:00 local time (22:00 GMT).
Bombs went off in the Old Market area was followed by two blasts in the Naama Bay area.
At least 62 people are confirmed dead although reports are still coming in.
This is the first attack on Egypt since 1997 when 62 tourists and Egyptians were killed in Luxor. The attacks follow on just days after the second bombings in London.