The unsuspecting happened. Lance Holger Anderson, 60, and resident of Santa Clarita, Los Angeles, was charged with murder after shooting to death his wife and his sister, according to MSN News.

The news comes as a shock to Anderson's neighbors describing him "the sweetest guy you could ever imagine," the report said.

According to Los Angeles police Lt. Paul Vernon, the shootings were apparent mercy killing.

According to the investigation, Anderson allegedly walked into the Country Villa Sheraton, a nursing home, and shot his sister, Lisa Nave, 58. Nave had been committed to the Country Villa Sheraton for five years now. She suffered from a heart attacked that rendered her in a coma.

A resident who said he heard a gunshot saw Anderson sitting in the nursing home's courtyard. He described Anderson with head bowed right until the police came to arrest him for murder. A small caliber was recovered from the crime scene.

Concerned family members who have heard of the killing have contacted the authorities to check on Anderson's wife's safety. Anderson's wife was found dead Wednesday morning in their three-bedroom townhouse in a northern Los Angeles County suburb.

The neighbors said that Anderson and his wife moved into their home about five or six months ago.

Anderson and his wife came from Arizona because he wanted to attend to his wife's health.

Grace Madrigal, Anderson's neighbor, described him as sweet and as someone who was always quick to extend help, while his wife was more reclusive.

"He treated her like she was a jewel ... because she was so fragile," Madrigal told MSN News. "[He] was sometimes seen on the balcony with her, caressing her hand."

In the eyes of his neighbor, Anderson is a gentle person. He once offered his neighbors Kristen and Lee Booker food and helped them move their furniture after the couple's home was damaged by a fire last September. Another neighbor said that Anderson help her fix a flat tire.

Kristen and Lee Booker said Anderson offered them food and help moving furniture after fire damaged their home in September. Another neighbor recalled Anderson fixing her flat tire.

Two weeks ago, Anderson offered Madrigal his artificial Christmas tree.

He told Madrigal that the couple wouldn't be doing anything for Christmas this year, she said.