The San Francisco Police Department say that they've tracked down the suspects in one of two fatal shootings on Sixth Street Tuesday night, but are still seeking witnesses to the slaying.

As previously reported, 19-year-old Daniel Beltran of San Francisco was gunned down in the lobby of a building on Sixth Street between Market and Mission at around 5:11 Tuesday morning.

SFPD spokesperson Sergeant Danielle Newman says that officers responded to a 911 call "that someone was hurt in the area of 6th Street and Minna Alley," but were rerouted to San Francisco General Hospital, where Beltran's friends had taken him. He "succumbed to his injury shortly after his arrival at SFGH," Newman says.

"Through numerous investigative leads," Newman says, SFPD investigators tracked two suspects, 34-year-old Darius York and 33-year-old Joseph Young, both of San Francisco, to Fremont, and took them into custody at around 11:30 p.m. Tuesday.

Both were booked into San Francisco County Jail Wednesday morning on suspicion of murder and conspiracy, Newman says. Due to pending identification matters, SFPD isn't releasing a booking photo of the suspects at this time.

Beltran's shooting was but one of two homicides in the area on Tuesday: at 11:07 that evening, 25-year-old Pacifica man Marc-Anthony Salumbides was shot and killed near 6th and Mission. As of Thursday morning, SFPD did not have any new information on suspects in his death.

Newman says that police are still seeking information on both shootings, and urge anyone who can help to call them at 415-575-4444 or to text-a-tip to TIP411 with "SFPD" in the beginning of the message body.