By Holly Yan, Emma Tucker, CNN
(CNN) — More than a week after a Columbus, Ohio, couple was shot dead in their home – the same place they exchanged wedding vows and were raising their young family – their killer is still at large and police have released few details about their investigation.
Spencer and Monique Tepe, 37 and 39, were killed in the early hours of December 30 while their two young children were inside the residence. Their children, ages 1 and 4, were not physically harmed, police said; they and the family’s dog are now in the care of relatives, their brother-in-law told CNN.
A notable development in the case came Monday, when the Columbus Division of Police released surveillance footage showing a “person of interest” walking in the alley near the couple’s home in the Weinland Park neighborhood, just north of downtown. It was taken during the timeframe investigators believe the couple was killed, police said.
Police have not discussed possible suspects or a motive in a case they are investigating as a double homicide. Mystery has shrouded the killings since police revealed early on there were no obvious signs of forced entry and no firearm was found at the scene, CNN affiliate WSYX reported.
As law enforcement continues to ask the public for information, here’s a timeline of what we’ve learned since the Tepes were killed:
December 29
The last publicly known sighting of Spencer Tepe is on this day, a Monday.
After a friend told a dispatcher the following day he saw a body, the dispatcher asked when he’d last spoken with Tepe, according to 911 calls reported by WSYX. The friend responded: “Yesterday, I suppose.”
In a follow-up question, the dispatcher asked whether Spencer Tepe had been ill. The friend responded, “No, no. I was just with him yesterday.”
December 30
Sometime between 2 and 5 a.m. is when the Tepes are killed, according to Columbus police. Detectives believe the Tepes were killed in the upstairs of their home.
Police have not responded to CNN’s questions about why or how they isolated that three-hour window. Investigators later asked for any video footage from that time period.
The first 911 call comes at 8:58 a.m. from Dr. Mark Valrose, the owner of Athens Dental Depot, where Spencer Tepe was a dentist. Valrose, calling from his vacation in Florida, says employees told him Spencer Tepe hadn’t shown up for work.
Valrose asks police to conduct a wellness check, saying: “He is always on time, and he would contact us if there were any issues,” according to the recording.
“I don’t know how else to say this, but we are very, very concerned. This is very out of character for him,” he continues. “We can’t get in touch with his wife, which is probably the more concerning thing.”
At 9:22 a.m., an officer arrives at the home to perform the check, but no one answers the door and they leave, WSYX reported, citing police records.
Around 30 minutes later, Spencer Tepe’s colleagues and a friend arrive at the home, but they also do not get a response, the dispatch records showed. A man at the scene calls 911 at 9:56 a.m., saying he hears children inside.
The dispatcher tells him the police are being sent back to the home.
Two minutes later comes a third 911 call, this time from another colleague who says they’ve been unable to reach Spencer Tepe for about three hours, according to the recordings.
Around 10:03 a.m., the friend who said he’d seen Spencer Tepe on Monday calls 911 a