PANAMA CITY, Fla. — Armed looters are targeting homes and businesses that remain without electricity after being ravaged by Hurricane Michael a week ago.

Sheriff’s Maj. Jimmy Stanford said deputies have arrested about 10 looters each night since Florida’s Bay County took a direct hit from the strong Category 4 storm last Wednesday. In some parts of the county, residents have spray-painted signs warning that “looters will be shot.”

Callaway resident Victoria Smith told the News Herald that thieves came into her townhome while she and her four children were sleeping with the front door open to allow a breeze inside.

“I must’ve been so exhausted from everything in the past days I didn’t even hear them come in,” Smith said. “They just snatched my purse out of my hands and ran. … It was all we had.”

Often the looters have been armed, Stanford said.

“Most of our officers lost their homes, have been working 16- to 18-hour shifts with no sleep, no shower, and now they’re encountering armed individuals,” he said. “It’s a stressful time for everyone in Bay County.”

The storm killed at least 16 people in Florida, most of them in the coastal county that took a direct hit from the storm, state emergency authorities said Tuesday. That’s in addition to at least 10 deaths elsewhere across the South.

The scope of the storm’s fury became clearer after nearly a week of missing-persons reports and desperate searches of the Florida Panhandle neighborhoods devastated by the most powerful hurricane to hit the continental U.S. in nearly 50 years.

The Florida Department of Emergency Management’s count of 16 dead was twice the number previously tallied by The Associated Press, and included 12 deaths in Bay County, where the hurricane slammed ashore with 155 mph (250 kph) winds and a catastrophic storm surge last Wednesday.

Bay County includes Mexico Beach, the ground-zero town of 1,000 people that was nearly obliterated, as well as Tyndall Air Force Base, Panama City and Lynn Haven, all of which were heavily damaged.

The state’s tally did not provide details of how the victims’ deaths were storm-related, and The Associated Press was not immediately able to confirm those details for all of them. The AP’s tally of deaths, in which authorities have confirmed details of how people died, stood at eight in Florida, and 18 overall including other states.

The AP’s tally also includes 10 deaths in Virginia, Georgia and North Carolina.

Mexico Beach Mayor Al Cathey said two deaths were confirmed in his town, a man and a woman who did not evacuate and whose homes were destroyed.

Only one person remained missing in Mexico Beach, Cathey said, adding that authorities were almost certain that that person evacuated before Michael and simply hasn’t been contacted.

“We’re holding steady at two and don’t expect that number to rise,” the mayor said.

Nearly 137,000 Florida customers remain without power in an 11-county region that stretches from the Gulf of Mexico to the Georgia border, according to information compiled by state emergency management officials.