In July 2023, an elderly tourist from Philadelphia, Pennsylvania, was struck and killed in a hit-and-run car accident while visiting Washington D.C. with family members.

The main suspect in that case, D.C. resident Benjamin Robertson, 33, who was allegedly fleeing U.S. Secret Service officers when the fatal accident occurred, has been formally indicted for murdering retiree Bing Wong, 75, according to local Philly ABC affiliate WPVI.

Wong, whose teenage granddaughter was also struck in the incident that occurred near the National Mall but suffered only minor injuries, left behind five adult children and eight grandchildren following his unfortunate death.

Slew of criminal charges for suspect in hit-and-run incident

On Thursday, the U.S. Attorney's Office in D.C. announced that Robertson had been formally indicted a day earlier by a D.C. grand jury on several criminal charges and was scheduled to appear for an arraignment hearing on April 29.

Those charges included "second-degree murder of a senior citizen, assault with a dangerous weapon committed against a minor, fleeing a law enforcement officer, tampering with physical evidence, and destroying property."

The press release noted that Robertson had fled a traffic stop on July 12, 2023, when he struck two victims, Wong and his granddaughter, and then fled the scene, only to be located and arrested later by officers with the U.S. Park Police.

Suspect fled a traffic stop initiated by Secret Service officers

Local D.C. ABC affiliate WJLA reported in late July 2023 that Robertson had been tracked down and arrested by police for the deadly hit-and-run incident near the National Mall weeks earlier and was being held in custody with no bond at that time.

According to court documents, Secret Service officers had noticed expired tags on the vehicle Robertson was driving and also smelled marijuana coming from the vehicle and attempted to stop him, only for the suspect to take off and lead officers on a high-speed pursuit through the heavily populated area of D.C.

During that pursuit, Robertson is alleged to have driven on the wrong side of the road and sped through a red light, at which point he was hit by another car going through the intersection and then struck Wong and his granddaughter, who were walking along the crosswalk with other family members, after which he fled the scene.

The outlet noted that Wong was pronounced dead shortly after he was transported to a nearby hospital, while Robertson's vehicle, which was registered to a woman he used to date, was later located by surveillance cameras in a parking lot and identified by the damage sustained in the accident.

The court documents further revealed that Robertson appeared "disturbed" when officers showed him video of the incident after he was taken into custody and questioned, but insisted that the whole thing was an unfortunate and accidental ending to an alleged attempted carjacking that he claimed he was fleeing from -- not a traffic stop initiated by Secret Service officers.

Family "devastated" by unfortunate loss

As for Wong, local D.C. Fox affiliate WTTG reported in July 2023 that he was a retired chef from Philadelphia who was sightseeing in the nation's capital with his family as part of his "bucket list" of things he wanted to do with his free time.

The outlet described how "devastated" the family was at the loss and the "anger" they felt about him being killed while he was "just enjoying his retired life with family."

WTTG noted that Robertson was arrested on July 27, 2023, by U.S. Park Police officers and was initially charged with second-degree murder -- a charge that has now been upheld and expanded upon with additional criminal counts by a D.C. grand jury.