According to police, he came to the Rapido convenience store to buy a drink, shot Siwakoti as she stood behind the counter, shortly after he robbed her and fled with cash from the register.
The Colony Police Chief David Coulon said an anonymous tip lead them to a home in Frisco where Kingston was staying.
Coulon had informed Nabaraj Siwakoti, husband of the deceased Samira after investigators informed him they had arrested the man they believed murdered his wife.
Siwakoti and her husband owned the store on Main Street in The Colony.
According to police, as police moved in on its suspect, Kingston fled the home but was apprehended a short time later while hiding nearby in the neighborhood.
Coulon said there are other "persons of interest" in the robbery and they expect several other arrests in the next couple weeks. Kingston also faces an aggravated robbery charge for another convenience store robbery last month in Frisco.
The Colony police said Kingston may also be linked to an armed robbery at a Cash-N-Go on Main Street in The Colony just days before the murder.
Hearing about the arrest, several of Siwakoti's customers stopped by the convenience store to share their well wishes for the family.
Related story
CPN (UML)'s Siwakoti leads in Dolakha
