The bodies of 18-year-old Savanah Soto and her boyfriend Matthew Guerra were found in a parked vehicle on Tuesday.
SAN ANTONIO, Texas -- Savanah Nicole Soto, a pregnant teenager who disappeared before she was scheduled to be induced, and her boyfriend Matthew Guerra, were found dead Tuesday following a dayslong search.
On Thursday, the San Antonio Police Department shared surveillance video of two people they want to question in their deaths.
The two bodies were discovered in a vehicle in the 5900 block of Danny Kaye Drive in northwest San Antonio, the city's police chief, Bill McManus, told reporters Tuesday evening, calling the case "very, very perplexing."
"Detectives right now are looking at this as a possible murder, but we don't know for sure," McManus said.
The bodies of an 18-year-old woman and 22-year-old man were found in the boyfriend's parked vehicle, each with a gunshot wound, police said Wednesday. Authorities do not know who located the car but believe the couple had been there for three to four days.
An unborn child was also found deceased.
The newly-released surveillance video shows someone in a pickup truck pulling up next to another person driving a Kia Optima believed to be the same one owned by Guerra.
The two drivers are seen interacting before taking off.
Investigators wouldn't say when the footage was captured, only saying it happened at a nearby location and was filmed in the days leading up to when the victims' bodies were found.
The medical examiner positively identified the male victim as Guerra, but police are awaiting positive identification for the female victim. The victims' cause of death will also be confirmed by the medical examiner.
Soto, 18, was last seen Friday afternoon in Leon Valley, according to the Texas Department of Public Safety. The agency issued a CLEAR Alert -- used to help law enforcement locate someone in imminent danger or whose disappearance is involuntary -- for Soto on Monday.
The pregnant teen had passed her delivery date, which "caused significant concern among her family members after missing an essential medical appointment," the Leon Valley Police Department said in a press release earlier on Tuesday.
Soto's mother, Gloria Cordova, told San Antonio ABC affiliate KSAT that her daughter was scheduled to be induced at a hospital this past Saturday.
"When I called her all morning, she wasn't answering, was going straight to voicemail," Cordova told the station. "We went to the hospital anyways. She was a no-show, and that's when I called the cops."
Cordova said her daughter's home was clean and had been prepped for the baby's arrival.
"This is not like her," Cordova told KSAT. "She was so excited to have this baby. The house was already baby-ready."
"There's no reason why she would just get up and go off and do that," she added.
Cordova said the family is already reeling after her son, Ethan, died last year. The 15-year-old was fatally shot at his home in San Antonio, police said.
"[Savanah] knows what I went through with Ethan, and I know she doesn't want me to go through this again," the mother told KSAT.
Amid the search for her daughter, Cordova said she did not know where the father of the baby was either.
"I just want her home," Cordova said. "I'm worried about the baby, if she's even had the baby, if she's in danger."
The Leon Valley Police Department said Tuesday morning that it was actively investigating Soto's disappearance and seeking additional witnesses and information.
The couple's death is being investigated as capital murder.
The San Antonio Police Department has taken over the investigation. Anyone with information is urged to contact SAPD Homicide at (210) 207-7674 or (210) 207-7440. You can remain anonymous when providing any information on this case.