LAS VEGAS (AP) — Internet websites for the Las Vegas Sun and three related entities are back up and running after a weekend cyberattack overwhelmed servers and blocked access.

The newspaper reports that the Greenspun Media Group websites lasvegassun.com, lasvegasweekly.com, vegasinc.com and vegasdeluxe.com were temporarily disabled or compromised for several hours late Friday and early Saturday.

Some users later were involuntarily redirected from one site to another.

Las Vegas-based Greenspun Media Group reported the trouble resulted from a cyberattack known as “distributed denial of services” and would be reported to legal authorities.

Such attacks overwhelm a website with traffic from a network of computers dubbed a “botnet,” controlled by an attacker and operated remotely.

The traffic shuts down a site but doesn’t infect it with a virus.

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Information from: Las Vegas Sun, http://www.lasvegassun.com