A woman who is already accused of stalking one tech CEO apparently walked into Google’s offices last month and left a letter and book for company co-founders Sergey Brin and Larry Page.

Mountain View police spokeswoman Liz Wylie confirmed Thursday that Vera Svechina, a 37-year-old San Francisco resident, followed a visually impaired Google worker through a door into a secured, employee-only area on March 18.

Svechina then made her way to an empty desk outside of one of the co-founder’s offices, and left a letter and book written in Russian, Wylie said.

Business Insider described Svechina as an “amateur filmmaker and former stripper from Russia.” Zynga founder Mark Pincus filed for a restraining order against her in February, according to Business Insider, after she allegedly threatened his wife and children, and visited his home.

Wylie did not know the title of the book left by Svechina.

“There was “nothing threatening” about the letter, but it was “angry in parts,” she said

After an employee found the book and letter, Google security reviewed its surveillance tapes and found images of Svechina entering the building. Google notified Mountain View police of the incident, Wylie said, but none of Svechina’s actions rose to the level of criminal activity and no charges were filed against her.

“It’s just reporting it, making sure we’re aware of it,” Wylie said.

Mountain View police have dealt with Svechina in the past. She was detained last May after she came to police headquarters and asked to file a complaint against Google.

“She thought they were inside her head,” Wylie said.

Police determined she was a threat to herself and took her to a hospital for a 72-hour-hold.

E-mail Diana Samuels at dsamuels@dailynewsgroup.com.