A Mexican musician, his pregnant wife, their three-year-old daughter, nanny and family dog were found dead in an upscale neighborhood near Mexico City in a gruesome multiple homicide, authorities said, CNN reports.


Jonathan Meléndez, a 38-year-old keyboardist with the well-known indie rock band Camilo Séptimo, was among those found dead in an apartment late September 1 night, according to the State of Mexico Attorney General’s Office. His wife, Ana Paula, 35, was four months pregnant.


The third adult victim, identified as 21-year-old Aleida Romero Victorio, worked for the couple as a nanny, her family told reporters.


“She was a very hardworking and responsible girl who did not deserve for this to be done to her,” her aunt, Lorena Victorio Cabrera, said.


Authorities said three of the victims, including the young girl, were shot in the head, while another victim was shot in the back.


“Two of the victims were found with their hands bound,” the prosecutor’s office said. The family dog was also found dead, with its legs tied.


A six-year-old boy was found alive at the scene and was unharmed, authorities said.


Investigators believe the killings took place between 5:30 p.m. and 7:40 p.m. on September 1.


Camilo Séptimo paid tribute to Meléndez, saying he would be remembered “with immense love and gratitude.”


“Today we honor and celebrate his life, his music, his light, and what he shared with those of us fortunate enough to know him and walk alongside him,” the band said on Instagram.


Two men were arrested on September 2 in connection with the killings in a joint operation involving the State of Mexico Prosecutor’s Office, the federal Secretariat of Security and Citizen Protection, and the Mexico City Secretariat of Citizen Security.


One of the suspects, identified as Diego Sebastián “N,” is believed to have been an associate of Meléndez and is accused of being the probable perpetrator, the prosecutor’s office said. Another man, identified as Gerardo “N,” is also being investigated for his alleged involvement.


Mexico’s Secretary of Security and Citizen Protection Omar García Harfuch said one of the suspects allegedly “exploited” his relationship with one of the victims to gain entry to the home.


The prosecutor’s office said it would provide further details about the circumstances of the killings and the legal status of the detainees at the appropriate stage of the proceedings.


It was not immediately clear whether the suspects had legal representation.


By Vafa Guliyeva