An official says specialist doctors have arrived to Romania from overseas to help treat those injured in the fire in a Bucharest nightclub that killed at least 30 people.

Raed Arafat, an emergency situations official said Monday that a handful of specialists have arrived from Israel and France to help treat the 140 people who were hospitalized after the fire Friday night. Of those, 90 are in a critical or serious condition.

Arafat said that even if burns patients initially survive their injuries, medical problems can continue long afterward as "they tend to evolve in a stable manner and then start collapsing."

He said some cases need frequent operations and their wounds need to be cared for.

The government says it will cover patients' medical costs.