SAN JUAN CAPISTRANO – A divorced couple killed inside their San Juan Capistrano home died from gunshot wounds, law enforcement officials confirmed Tuesday.

An 8-year-old boy inside the home – the youngest of the couple’s five children – was also hit and seriously injured in the Sunday morning shooting, said Lt. Jeff Hallock of the Orange County Sheriff’s Department.

Now investigators are delving into the couple’s past, including previous business dealings involving tech companies that often found themselves in litigation, and any relationships the San Juan Capistrano couple had.

“We’re trying to turn over every little rock,” Hallock said.

Two days after Bradford Hans Sachs, 57, and Andra Resa Sachs, 54, were shot and killed inside the sprawling home on Peppertree Bend, law enforcement officials said no suspects have been identified.

Sheriff’s officials have released few details about what happened inside the home before someone inside called 911. That call came from one of the couple’s two teenage daughters, who were both inside the home when the shooting occurred, Hallock said. They were not injured.

When paramedics and deputies arrived, they found the couple dead with apparent gunshot wounds.

Their 8-year-old was also shot and was taken to a nearby hospital to be treated. He is expected to survive.

Law enforcement officials said the homicide was an isolated incident, but have not pinned down whether it was a random attack or a targeted killing.

Hallock declined to comment on whether any of the couple’s children who were inside the home provided any information regarding a suspect or suspects.

In the meantime, Sheriff’s officials said they are looking into the couple’s past dealings, including a list of lawsuits involving several companies under the Sachs’ names.

Bradford Sachs’ father, Hal Sachs, said the couple “had the ability to make money,” and would look at several venues to buy property or launch a business.

Court records show Bradford and Andra Sachs filed for divorce in 1999, yet continued to work and live together.

They had five children, Hal Sachs said, including two other sons who attend college in Washington.

Court records show the couple was also named in several lawsuits involving their tech businesses.

One of their latest ventures, Plug In Solutions, was sued by a woman who said she paid $11,000 for a power-conversion kit for her car that worked for six months until the battery began leaking a “toxic smell,” according the court claim.

The suit was settled out of court.

Another company, Flashcom, remained in litigation for years while company officials attempted to remove Andra Sachs from its board of directors, according to court records.

The couple also had a property management company, Ashby Enterprises LLC, that was involved in several small claims.

Brad Sachs also was an amateur drummer who played in local bands over the years.

San Juan Capistrano resident Mike Johnson played in a band with Sachs from 2006 to 2008 and described him as a good drummer who was “shrewd” and “direct” in his business dealings.

“No matter what they may or not have done in their business dealings no one deserves this,” Johnson said.

The 8-year-old boy is a student at Del Obispo Elementary School in San Juan and his sisters attend Dana Hills High School. Grief counselors were at the schools Monday, said Jim Reardon, a trustee with the Capistrano Unified School Board.

Hallock said investigators are continuing to interview acquaintances, business associates and relatives of the family.

Contact the writer: 714-704-3788 or shernandez@ocregister.com