In a tweet Saturday, NYPD Commissioner Dermot F. Shea said the determination was made after a thorough investigation by Chief of Detectives Rodney Harrison.
Terlok Singh was found dead in his store on Thursday.
Loyal patrons who rely on the stores for staples of daily life had to look elsewhere for lunch after more than 1,000 locations shut their doors from noon to 8 p.m.
Dips in U.K. supermarkets contain high levels of salt and fat, according to a report.
Groups of hackers have rendered tens of thousands of French websites unusable.
Amedy Coulibaly, who staged the attack on a Jewish deli, said in a video that the planned assaults were justified by French military interventions overseas.