OpenAI CEO Sam Altman’s house may have been the target of a second attack after San Francisco Police Department arrested two suspects for a reported shooting in the Russian Hill neighborhood. The SFPD said in a press release that police officers responded to a “suspicious occurrence of possible shots fired” at around 5:56 AM ET / 2:56 AM PT on Sunday, April 12.

SFPD’s Special Investigation Division took over the case and have since detained both 25-year-old Amanda Tom and 23-year-old Muhamad Tarik Hussein, seizing three firearms in the process with the help of a warrant. The two suspects were charged with negligent discharge.

According to the initial police report, as reported by The San Francisco Standard, two people inside a Honda sedan stopped in front of Altman’s property that spans from Chestnut Street to Lombard Street. The police report also noted that the passenger appeared to fire a round at the Lombard Street side of Altman’s property. The property’s security personnel reported hearing a gunshot and there was surveillance footage that recorded the incident, according to the report.

This could be the second instance of violence targeting Altman and his residence in a matter of days. On Friday, a 20-year-old man allegedly hurled a Molotov cocktail at Altman’s home, which caused a fire on one of the property’s exterior gates, according to SFPD. The San Francisco Standard reported that there were no injuries in either incident.