While Digwa had been wearing a traditional kirpan under his clothing, the weapon he used on Nowak was much bigger and he had worn it in a sheath on top of his clothes.
When he asked his mother Kiran Kaur to take it away from the murder scene, he described it as a "shastar", which is the Punjabi word for weapon.
Kaur is due to be sentenced for assisting an offender later this month.
It added this happened long before he murdered Nowak.
In a statement, Digwa's family said they were "deeply sorry for the pain and suffering the Nowak family has had to endure".
It continues: "We would give anything to turn back time so the path of both Henry and Vickrum never crossed that night.
We cannot change what has happened, we just hope that no further pain is caused in its name.". »