The collapse on Saturday at one of Italy's main tourist attractions was a source of embarrassment for the government and the country.
Culture Minister Sandro Bondi went to Pompeii on Sunday to survey the damage.
He said "these collapses ... could concern other buildings," according to Italian news agencies.
Bondi said he will speak to parliament about the situation in Pompeii, amid accusations that Italy's archaeological treasure is in a state of decay. Bondi has urged more government funds for Pompeii.