Updated

A woman accused of stalking a tech CEO allegedly worked her way into Google's offices last month, leaving an angry letter and book for the company's co-founders, the San Jose Mercury News reports.

Vera Svechina, a 37-year-old San Francisco woman, reportedly followed a visually impaired employee through a secured door March 18 at company headquarters in Mountain View, Calif.

Once inside, police say, Svechina left a letter and book written in Russian outside of one of the co-founder's offices, according to the newspaper's website.

There was "nothing threatening" about the letter, but it was "angry in parts," Mountain View police spokeswoman Liz Wylie told the newspaper.

Mark Pincus, founder of Zynga, reportedly filed a restraining order against Svechina in February after she allegedly threatened his family.

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