Police said the clerk handed the suspects money, but one of the suspects fired at him. Mr Jaryal was taken to the hospital where he later died.
"The victim was able to tell officers what happened when they arrived a few minutes later; but tragically, he died a short time later at the hospital," police was quoted as saying by the NBC Right Now channel.
Mr Jaryal was from Hoshiarpur district in Punjab and had shifted to the US about a month ago, his elder brother told news agency PTI.
External Affairs Minister Sushma Swaraj condoled the "tragic death" after she was informed about the incident by the victim's brother through twitter seeking her help to bring back the body.
Police are investigating the case and are now looking for two men caught on surveillance camera leaving the store.
"Somebody knows something. Somebody knows these people. The still photos show a very recognisable top that one of the suspects is wearing," Mike Bastinelli, Yakima Police Department said.
"The shooter wore a black hoodie with patches of white on the back," Mike said.
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