Pregnant actress Drew Barrymore called police to her home on Tuesday night (18Mar14) after a stranger repeatedly knocked on her front door.

The Charlie's Angels star panicked after a white van pulled up outside her Los Angeles property and a man approached the house.

Barrymore was home alone with her 17-month-old daughter Olive and called the emergency services, according to Tmz.com.

The police later discovered the man was employed by a cell phone network company to carry out work in the neighbourhood.