Rome ? Rescue workers dug for a second day Saturday through piles of mud and debris as they searched for about 30 missing people from a mudslide that has killed at least 21 in Sicily.

Premier Silvio Berlusconi said he feared the death toll from Italy’s worst mudslides in a decade could rise to 50. The Italian premier is expected to survey the area by helicopter today, his office said.

Rivers of mud unleashed by heavy rains flooded parts of Messina, a city in eastern Sicily, on Friday, sweeping away cars and collapsing buildings. Hundreds were left homeless and about 80 injured.

With the rain letting up and sun forecast in coming days, the head of the Civil Protection Department expressed cautious hope the worst was over. “The situation is difficult and complex, but it is under control,” Guido Bertolaso told reporters from Messina.

However, some roads were still impassable and the terrain unstable from the rain that fell in the past days. Bertolaso said that some roads had “crumbled.”

Rescue teams were digging with bulldozers, shovels and bare hands through the mud. Some rescuers were aided by sniffer dogs as they searched for survivors. Firefighters were clearing away the mud from major roads.

Officials said the number of missing was believed to be around 30 but was hard to determine. About four missing people were found to have been away from the area at the time of the disaster, said Luca Spoletini of the Civil Protection Department.

One village remained isolated and only reachable by air, Spoletini said, while rescue teams managed to create a roadway to another small town that had been inaccessible. He said that while the lives of people in the villages were not believed to be in danger, there were concerns for their health and hygiene.

A few hundred people were evacuated from unsafe homes and moved to hotels in Messina being used as rescue centers, Spoletini said. Some older residents did not want to abandon their homes and had to be persuaded to go.