A rock star, his pregnant wife, their toddler, the family nanny and their pet dog have been killed by a home invader.
Jonathan Samuel Meléndez Ochoa, 38, was the keyboard player and co-founder of indie rock band Camilo Séptimo.
His wife Ana Paula, 35, was four months pregnant.
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Their three-year-old daughter Sofía was also among the dead.
The keyboardist’s young son was found alive as two suspects were arrested within 12 hours.
The attack happened in the couple’s penthouse at the Grand Viure complex in Atizapán de Zaragoza, on the edge of Mexico City, on Tuesday (1 Sep).
Police were called at 11.50pm and found four bodies in the property.

A 21-year-old woman who worked for the family, named as Aleyda Romero, was also killed.
Her aunt, Lorena Victorio Cabrera, said: “She was a very hardworking and responsible girl who did not deserve for this to be done to her.”
A six-year-old boy, the couple’s son, was found alive and unhurt.
The family dog was found dead, with its legs tied.
State prosecutors said two of the victims had their hands bound.
Three of the dead, including the little girl, had been shot in the head.
The fourth victim had been shot in the back.
Officials believe the killings happened between 5.30pm and 7.40pm.

Reports said one suspect reached the building at 5.24pm, before Meléndez got home.
Hours earlier, the musician, whose stage name was Honas, told a friend that he was due to meet a business partner.
He asked the friend, named Freddy, to alert the police if he went silent that night.
Freddy later raised the alarm when he could not get hold of him.
A statement by Camilo Séptimo said: “With deep pain we bid farewell to our beloved brother Jonathan Samuel Meléndez Ochoa, Honas.
“We will always remember him with immense love and gratitude.
“Today we honour and celebrate his life, his music, his light and what we shared with those of us lucky enough to know him and walk the road with him.
“We stand with all our love beside his family, friends and loved ones in this moment of enormous sadness.
“We also send our condolences to the family of Aleyda Romero, who worked with them.
“They will live forever in our hearts.
“Honas, we celebrate your music, your life and your light.”
They added: “We value the effort and professional work of the State of Mexico Prosecutor’s Office in clarifying the facts.”
Two men were arrested on Wednesday in under 12 hours.
Mexico’s security secretary, Omar García Harfuch, said one suspect “allegedly used that relationship of trust to gain access to the residence”.

He added: “In the face of a crime of this gravity, the institutions acted immediately and in a coordinated way.
“The two probable perpetrators are already detained and will be placed at the disposal of justice.”
Prosecutors named Diego Sebastián ‘N’, a business associate of Meléndez, as the suspected main attacker.
Some Mexican reports name him as Diego Sebastián Rosen Ferlini, aged about 51.
Official statements still use only his first names.
Reports conflict on whether he is Argentine or Mexican.
A second man, Gerardo ‘N’, is being investigated as the alleged driver who waited outside.

Some journalists name him as Gerardo Cisneros, but this was not confirmed in the prosecutor’s public notice.
The pair were taken to the Special Affairs Prosecutor’s office in Toluca.
They are being held pending aggravated homicide warrants.
A row over money or a robbery is one line of inquiry, as reported by Need To Know.
The State of Mexico prosecutor’s office said it would set out the full circumstances and the suspects’ legal status at the proper stage of the case.
The investigation continues.
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