Police in Mountain View, Calif. arrested a man on June 30 who allegedly had a weapons case in his vehicle with material that could be used for a pipe bomb, San Jose Mercury News reports, citing an affidavit filed last week in federal court in San Jose. The affidavit says the man, Raul Diaz, told police officers that he “felt Google was watching him and that made him upset,” the news outlet says. He reportedly also kept a journal to note when he believed Google had monitored him.

According to the affidavit, a man visited Alphabet’s (GOOGL) offices on three occasions. On May 19, a company employee is said to have spotted a man throwing Molotov cocktails at a Google Street View vehicle that is used to photograph roads. On June 4, an unidentified person heard shots fired on the campus, the affidavit says. Police reported seeing five holes in windows and broken glass, but whoever was responsible had left by the time they had arrived.

Get Data Sheet, Fortune’s technology newsletter

Finally, on June 10, a man is said to have set fire to one of the company’s cars. Security cameras showed a man using a squirt gun to douse the car with what police said could have been gasoline or another flammable liquid, according to the report.

The attacks all occurred late at night, the report says. Police couldn’t identify the individual or individuals involved through security camera footage, but the affidavit says the same SUV was on Google’s campus in the first two incidents.

Police arrested Diaz after he was seen driving his SUV through Alphabet’s parking lot, according to CNN Money. He has been accused of malicious damage to a building or vehicle by an explosive related to the May 19 incident, but has not been charged in the others.

An investigation is underway to determine whether Diaz was involved in the other incidents. He is currently being held in the Santa Clara County Jail without bail.

For more about Apple, watch:

Alphabet did not respond to a request for comment.