Authorities are in search of answers in the double murder of a Northern California couple found shot to death inside their home Sunday next to an eerie message.

San Jose Police Sgt. Enrique Garcia said Tuesday the bodies of Shamima Rabbi, 57, and Golam Rabbi, 59, were discovered at around 2 p.m. Sunday in their Quimby neighborhood home.

The Los Angeles Times reported that police were called to check out the home after relatives had tried to contact them, but couldn’t get a hold of them. Police said they were both shot at least once.

According to KGO-TV, authorities found an ink-scribbled message next to the bodies that read: “Sorry my first kill was clumsy.”

Officer Albert Morales declined to comment on the existence of a message left at the scene.

UPDATE: #SanJose police seek adult son of couple found shot dead on Sunday, but he's not considered suspect https://t.co/xPrRr1cufc — KTVU (@KTVU) April 27, 2016

San Jose police have contacted the couple’s juvenile son and are attempting to locate their second adult son for questioning. Detectives don’t consider the Rabbis' adult son a suspect at this time, according to KTVU-TV.

The Rabbis were long-time residents of the neighborhood and were active members in the Islamic community. Their deaths have shocked the community.

“I’ve known him for 30 plus years, so it’s a loss,” Hasan Rahim, of the Evergreen Islamic Center, told KTVU-TV. Rahim said they were dedicated members of the mosque and were natives of Bangladesh.

“He always asked me about my family, now I can’t answer him back,” Faisal Yazadi, who also attends the Islamic Center, told the station.

San Jose police told the San Jose Mercury News the “incident was not a random act of violence and the suspect was someone familiar to the family.” A suspect or motive has not been identified as of Tuesday.

The Evergreen Islamic Center said they’re opening their doors to offer support for anyone in need as a result of the murders.

Anyone with details of the couple’s death is urged to call San Jose police Homicide Sgt. Pat Guire or Det. Ken Tran at 408-277-5283. Anonymous callers can contact the Crime Stoppers Tip Line at 408-947-7867.

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