Call it a case of sibling robbery

Two sets of siblings from South Jersey have been arrested and charged with robbing a bank in Delaware after one of the bandits left the keys to a getaway car behind.

Delaware State Police said the ill-fated robbery began about 9:10 a.m. yesterday when three men donned wigs, and entered the Artisans Bank in Bear.

Inside the bank, the bandits, two of them armed, duct taped two employees and forced the remaining six into a bathroom, police said.

One of the robbers fired a shot into the ceiling but claimed after his arrest that it was an accident, police said.

After getting a female employee to help them gather up the loot, the three fled and locked the doors behind them, officials said.

But on a counter inside, they had left behind the keys to a Chevrolet Aveo they planned to use in their getaway.

A Ford Focus driven by a woman then screeched to the rescue and all four fled east on Route 40.

Armed with witness descriptions of the vehicle, a New Castle County police officer pulled the Focus near the Route 13 split and took the four into custody without incident.

Arrested were Marvin Mencia, 22, of Egg Harbor, and his 21-year-old brother Olman Mencia, 21, Atlantic City as well as Jeffrey Johnson, 21, and his sister, Ciara Johnson, 20, both of Atlantic City.

Each has been charged with six counts of robbery, eight counts of kidnapping and other felonies.

They are in jail today after bail for each was set at more than $300,000 cash.