A three-storey building collapsed in Alexandria on Sunday killing at least one person and injuring three, due to what the governor said was another block built next to it without license.
Rescue workers have so far found one body under the rubble while efforts continue to search for more victims.
The building was old, a source said, adding that an order for it to be demolished was issued but not executed.
Nineteen people were killed in a similar collapse last month, also in Alexandria.
Building collapses are common in Egypt due to poor maintenance, architectural errors and violations.