A southwest Florida man is in custody after his girlfriend, her teenage daughter, the couple's toddler and their dog were found dead at their home.

Jail records show that 27-year-old Patrick Sean Carlopoli was being held Monday on multiple charges. Local media outlets report that Lee County deputies responded early Sunday morning to a 911 call from Carlopoli at Iona Lakes Apartments in Fort Myers.

An arrest report says Carlopoli directed deputies into an apartment, where they found 37-year-old Tammy Modlin and 16-year-old Montana Modlin dead on a bed with a firearm between them. The deputies also found 3-year-old Jeanne Carlopoli and a dog fatally stabbed.

The report said that Carlopoli told deputies that he shot his "wife," though officials say the couple wasn't married.

Jail records didn't list an attorney for Carlopoli.