Google Inc. apologized Saturday for an erroneous message appearing in every search result which appeared to users that morning.

The messages stated: This site may harm your computer.

Google said its team was able to solve the problem quickly. It lasted between 9:30 a.m. and 10:25 a.m. Saturday, the company said.

What happened? Very simply, human error, Google said on a statement Saturday. Our apologies to any of you who were inconvenienced this morning, and to site owners whose pages were incorrectly labeled. We will carefully investigate this incident and put more robust file checks in place to prevent it from happening again, the message continued.

The search engine flags search results with such a message when the site is known to install malicious software in the background of a user's session or surreptitiously, Google said. However Saturday's error displayed the message to all website links.

Google keeps updates a list of malicious sites in partnership with a non-profit organization called hosted by legal professionals at Harvard and Oxford universities.