The source said the singer "is offering half-a-million dollars to anyone who has her two dogs, no questions asked. Anyone who has the dogs can use this email, [email protected] to retrieve the reward."

The Los Angeles Police Department (LAPD) said a man was shot during a robbery before 10 p.m. and was transported to the hospital in stable condition. The male suspect took the two bulldogs from the victim, used a semi-automatic handgun and fled the scene in a white sedan, according to police.

The investigation is ongoing.

The source added that the singer's dog walker is thankfully "recovering well."

CNN's Stella Chan and Raja Razek and contributed to this report.