Lady Gaga's dog walker was shot and hospitalized in critical condition and two of her French bulldogs were stolen during a Wednesday night robbery, PEOPLE confirms.

A Los Angeles Police Department spokesperson tells PEOPLE a robbery occurred at 9:40 Wednesday night on Sierra Bonita Avenue in Hollywood, during which two French bulldogs were stolen.

For more on Lady Gaga's dog walker and missing dogs, listen below to the episode of PEOPLE Every Day.

The male victim, whose name has not been released by authorities, was transported to the hospital and is currently in critical condition, an LAPD spokesman says. At least one shooter, described as a male who used a semi-automatic handgun, was seen leaving in a vehicle going northbound toward Hollywood Boulevard.

The LAPD's robbery/homicide division has taken over the case.

A rep for Lady Gaga, who is currently in Italy, confirms the victim was the singer's dog walker and the two dogs were her French bulldogs, Koji and Gustav.

The rep confirms Gaga is offering a $500,000 reward for information about the dogs.

Those with information on the case should email KojiandGustav@gmail.com, the rep says.

In 2016, Gaga announced she'd adopted a new puppy who she would later name Gustav.

"I'm proud to announce we added a new member to the #JOANNE family," the singer shared on Instagram.

"I haven't named him yet but I call him both cowpig and moopig in the meantime!" Gaga continued in her post.

Tara Bruno, founder of SNORT Rescue, a New Jersey-based organization that rescues bulldogs, pugs and Boston terriers, says French bulldogs are among the most stolen dog breeds because they're very popular, are small and portable, and are expensive.

French bulldogs from reputable breeders cost between $3,000 and $5,000, she says, while dogs from puppy mills or overseas importers with designer coats in blue or merle can bring in about $10,000.

The AKC lists French bulldogs as the fourth most popular breed in the United States, behind Labradors, golden retrievers and German shepherds. But French bulldogs are easier to steal because they are small, says Bruno.

"The motive is resale. Thieves know they can get a couple thousand dollars for them," she says.