Kollias said no personal data of subscribers, online users or advertising clients was compromised as a result of the interference, and news and all regular features are available online.
A computer virus prevented The San Diego Union- Tribune from publishing its Saturday print edition, according to a post on the newspaper's website.
"A disruption to our print production systems caused delays in the delivery of some of our newspapers Saturday", the statement read.
The issues also affected distribution of the San Diego Union-Tribune as well as editions of the Wall Street Journal and New York Times, which are all printed at the Los Angeles Times' Olympic Printing Plant in downtown Los Angeles.
Tribune Publishing, which owns the Chicago Tribune and the Sun, as well as the New York Daily News and Orlando Sentinel, said it first detected the malware on Friday. "We apologize to all of our readers for the inconvenience".
Sears is closing two more Triangle stores
He said he meant to bid $4.6 billion for 500 stores and other operating assets, including the Kenmore appliance brand. The closings comprise 43 Sears and 37 Kmart stores, the two brands operated by Sears Holdings .
While the Times noted it was aware of the problem on Friday, its technology teams attempted to fix it, but couldn't resolve the matter before production was set to begin.
The attack on Saturday appeared to originate outside the United States, the Los Angeles Times reported.
"A computer virus infected the business systems associated with the printing process". "Thank you for your patience and support as we address the infection".
The attack is believed to have come from outside the U.S., the LA Times said. When subscribers tried to call the paper, they were erroneously told that the numbers were out of service.
Sun Sentinel said in a statement that the Saturday edition would be delivered along with the Sunday edition. "When people think of malware, the impression may be, 'It's a little program that runs on my computer, '" Dixon said.