Austin, Texas — The Austin Police Department (APD) is investigating a suspected murder-suicide after two people were found dead inside a residence in the 1900 block of Pennsylvania Avenue on the afternoon of July 29.

Authorities say the incident was first reported at 4:12 p.m. when a delivery driver, approaching the home, noticed a man bleeding near an open doorway and immediately called 911.

Responding officers discovered 50-year-old Jon Nickowski near the entryway with visible trauma injuries and a firearm close by. Inside the residence, police found 42-year-old Kimberly Sullivan with multiple gunshot wounds. Paramedics pronounced both individuals dead at the scene before 4:30 p.m. Investigators believe Nickowski fatally shot Sullivan before turning the gun on himself.

According to APD, the two had been in a long-term relationship. Neighbors expressed shock at the violence, noting they had not heard any prior commotion. Local resident Alec Brownridge recalled the sudden arrival of police and emergency vehicles, saying the tragedy served as “a reminder of life’s fragility” rather than a reason to fear for neighborhood safety.

This case has drawn renewed attention to the dangers of domestic violence, particularly when firearms are involved. Heather Bellino, CEO of the Texas Advocacy Project, emphasized that access to guns in abusive relationships drastically increases the likelihood of homicide. Her organization provides free legal assistance to survivors and works to develop safety plans before situations escalate.

Bellino urged those in unsafe relationships to trust their instincts and prepare exit strategies, which may include:

• Identifying safe locations or shelters.

• Establishing a code word with friends or family to signal distress.

• Keeping important documents and emergency items accessible.

She also encouraged loved ones to support victims without judgment, offering both resources and an open ear.

For those in need of help, the Texas Advocacy Project’s confidential hotline is available at 800-374-HOPE. In emergencies, individuals should call 911 immediately.

APD continues to investigate and is urging anyone with additional information to contact the Homicide Unit at 512-974-TIPS or submit an anonymous tip through Crime Stoppers.