Several US newspapers suffered major printing and delivery disruptions on Saturday following a cyber-attack, says local reports.
The cyber attack led to delayed distribution of The Los Angeles Times, Chicago Tribune, Baltimore Sun and other titles belonging to Tribune Publishing.
The company said it first detected the malware on Friday, which hit papers sharing the same printing plant.
The attack is believed to have come from outside the US, the LA Times said.
Furthermore, West Coast editions of the Wall Street Journal and The New York Times, which share the same production platform in Los Angeles, were also affected.
“We believe the intention of the attack was to disable infrastructure, more specifically servers, as opposed to looking to steal information,” an anonymous source with knowledge of the attack told the LA Times.
Tribune Publishing spokeswoman Marisa Kollias confirmed this in a statement, saying the virus hurt back-office systems used to publish and produce “newspapers across our properties”.
“Every market across the company was impacted,” she said, refusing to give more specifications on the disruptions, according to the LA Times.
FBI investigators have not yet commented on the attack.