After a week of searching, there is renewed hope today that some victims may be found alive under the rubble of the Champlain Towers. According to the Sun-Sentinel, “Early on the seventh day of a determined and “grueling” rescue effort, reports emerged that crews had discovered tunnels with pockets of air in the debris, lifting faint hopes for families awaiting word of miracles after the collapse of a Surfside condo building.”

Colonel Golan Vach, Commander of the Israeli National Rescue Unit, told CNN that the tunnels allowed rescuers to recover more people:

“We found people. Unfortunately, they are not alive… These tunnels that we found right now were almost the first to be big enough to enable people to stay between them. Most of the collapse is very, very tight. The collapse was major.”

The death toll officially stands at 18 now, with 145 people still missing. Two of the victims found Wednesday were children, ages 4 and 10-years-old. The Miami Herald reports:

Two young sisters, 10-year-old Lucia and 4-year-old Emma Guara, were among the latest victims identified by Miami-Dade police after being found in the rubble of Champlain Towers South on Wednesday evening. They are so far the youngest victims identified since the building partially collapsed suddenly a week ago.

Their mother, Anaely Rodriguez, was also among the 18 dead found so far.

Search and rescue teams had pulled the body of her husband, Marcus Guara, on Saturday and identified him on Monday, police said. The family of four lived together on the eighth floor.

With President Joe Biden set to visit Surfside tomorrow, The Washington Post reports that Miami-Dade State Attorney Katherine Fernandez Rundle is promising a thorough investigation into what happened:

Miami’s top prosecutor pledged Tuesday to have a grand jury examine last week’s collapse of an oceanfront high-rise, suggesting that even as the search continues for survivors, the focus was quickly shifting to accountability for a disaster likely to go down as one of the country’s worst.

Rundle told the Post, “[T]his is a matter of extreme public importance, and as the State Attorney elected to keep this community safe, I will not wait.”

CBS Miami has the latest on the rescue operation above.