The San Francisco Police Department has determined that two suspicious deaths discovered on Monday are indeed homicides, making them San Francisco's 37th and 38th slayings of 2014. In one case, details are still sketchy. In another, a homeless man was killed in a beating that has left even seasoned law enforcement officers shocked and angry.

According to SFPD spokesperson Officer Albie Esparza, a 67-year-old homeless man named Tai Lam was sleeping in an alley near Montgomery and Sutter Streets when a group of three suspects beat him to death.

According to Esparza, Lam was not robbed, and police believe the attack was unprovoked. His body was discovered, still in his sleeping bag, at 7:30 Monday morning.

"It's a vicious crime," Esparza said.

"People should be outraged that this homeless person was attacked unprovoked and essentially beaten to death."

Esparza says that police are already reviewing surveillance footage, and asks that anyone in the area who might have cameras that caught the suspects on tape to alert the police.

According to Esparza, based on the surveillance footage, police should be ready to release a description of the suspects shortly.

Then, at 2:37 Monday, 63-year-old San Francisco resident Gary Mulhearn was found dead inside a home on the first block of Essex Street, which is between First and Second Streets in SoMa.

Neither police nor the medical examiner would elaborate on Mulhearn's cause of death at publication time, saying only that it was "being investigated as a homicide." Unless the ME reverses their decision on Mulhearn's death, his will be San Francisco's 38th homicide of 2014.

As always, the San Francisco Police Department is eager for the public's assistance in both investigations. Anyone with information on either slaying can contact the SFPD anonymous tip line at (415) 575-4444 or send a tip by text message to TIP411 with "SFPD" in the message.