The boyfriend of a murdered pregnant woman was engaged to another woman who his slain partner texted to meet-up with before she died, it has emerged.
Police say Tyler Tessier, 32, killed Laura Wallen, 31, in Damascus, Maryland, then dumped her body in a shallow grave on September 2.
Her body was found on Wednesday in a field which she earlier sent a picture of to her sister, writing: 'Tyler has me on an adventure in the country. Not sure why but it's for something. Waiting in a field.'
Wallen, who was reported missing after she did not show up for the first day of class, was four months pregnant with his baby.
Her family have since revealed that he asked her father for her hand in marriage despite being already engaged to Kristina Wagoner.
Scroll down for video
Tyler Tessier, 32, has been charged with murdering his pregnant girlfriend Laura Wallen, 31, and dumping her body in a shallow grave. Police say he was engaged to another woman when he killed Wallen on September 2
On Thursday, they said they suspected him all along but that they were forced to take part in an emotional press conference with him because they had no proof.
August 28: Laura texted the other woman Tessier was engaged to asking to meet up
September 1: Last sighting by family
September 2: Last sighting of Wallen alive at Safeway buying goods with Tessier
She later texts her family saying she is 'on adventure' with him and that he has her 'waiting in a field'
September 4: Wallen's sister receives text messages from her phone saying Tessier is not the baby's father
Her sister reports her missing.
September 5: Wallen fails to show up for class. Tessier is taken in for questioning
September 7: Employees at apartment complex call police to say they have found her driver's license in dumpster
September 11: Tessier takes part in an emotional press conference with his girlfriend's parents
September 13: Tessier is charged with murder after police find Wallen's body in the field she texted a picture of to her sister
September 14: Police reveal Tessier was engaged to another woman
On August 28, a week before her death, Wallen sent a text message to the woman asking if they could meet up.
Police say she wanted 'an explanation' and that both women knew of each other but neither thought Tessier was seeing them both at the same time.
'It's important that some things are cleared up and I would imagine that if you were in my position, you'd want some answers as well.
'By no means is this an attempt at confrontation, just looking for an explanation, woman to woman' the text message read.
It is not known whether or not the pair ever did meet up.
On September 2, she went with him willingly to a rural property. The pair were seen on surveillance cameras making a purchase at a Safeway that day, the last known sighting of Wallen alive.
On September 3, her family said they stopped hearing from her. The next day, her sister received text messages from her phone which claimed Tessier was not the baby's father but that another man, called 'Antwan', was.
'I am like 95 per cent sure Tyler is not the father,' one read. Another said: 'I'm probably going to lose my job over this.
'If he tries to call you, please tell him he's a great guy because I know I really hurt his feelings,' they read.
Another said she would 'try to get a hold of Antwane'.
Police have determined that Tessier wrote those messages to try to shift