Sandra Bullock hid in her bedroom closet and sounded panicked and tearful at times as she guided police into her house after spotting an intruder last year, according to a 911 call played in court Thursday. The Oscar-winning actress called police after seeing a man in her home heading for the attic. The roughly 15-minute conversation with a 911 dispatcher is the first piece of evidence a prosecutor presented against Joshua Corbett, who is charged with stalking the actress and breaking into her home in June. 'I'm in my closet. I have a safe door,' Bullock, breathing heavily, is heard telling the dispatcher. 'I'm locked in the closet right now.' Scroll down to hear 911 call . Hiding his head: Joshua Corbett (right) appeared in court today at a preliminary hearing for charges of stalking and breaking into actress Sandra Bullock's house last summer . Panicked: Bullock's distressed 911 call was played in court on Thursday. Pictured above with her son Louis in 2013, who was fortunately not at the home during the incident . Preliminary phase: A judge is currently deciding whether there is enough evidence for Corbett to go on trial. Corbett pictured above at an earlier hearing . Bullock gave the dispatcher a description of the man and said she went out to investigate noises in her home. 'I thought it was a wind blowing,' Bullock said. 'Then I saw the person.' A police officer testified that Corbett was clutching a black notebook with a two-page letter to Bullock and magazine photos of the actress when he was arrested. 'He said, "I'm sorry. I love you Sandy,"' Los Angeles police Officer Jose Bermudez testified. Security footage showed Corbett outside Bullock's gate each of the three days before his arrest. Los Angeles police Detective Christina Carlozzi read entries from Corbett's notebook and a letter he wrote to Bullock the day before he was arrested at her home. The writings called Bullock his wife, professed his love for her, said he wanted to have sex with her and noted the security measures at her home. 'There is two large impervious gates that no one can open but you,' Carlozzi said, reading from the writings found on Corbett. 'I hope one day you open them to me.' Bullock is not expected to testify during Corbett's preliminary hearing, during which a judge will determine whether there is enough evidence for Corbett to stand trial. Corbett also is charged with having an arsenal of illegal weapons, including assault weapons, tracer ammunition and machine guns, that were found when authorities searched his home. Corbett was not armed when he was arrested at Bullock's residence, police have said. Corbett, 39, has pleaded not guilty to all charges. Bullock told police she was not armed and her son was not home at the time. She tried to navigate police through security at her home, which included a gate at her driveway. The actress attempted to open the gate from her cellphone, but it didn't work. 'Now my phone is not working so maybe they know how to override my system,' Bullock told the dispatcher. Bullock gave officers instructions on how to find her bedroom. When officers got there, Bullock, who sounded like she was in tears, thanked the dispatcher. In the call, Bullock says she locked herself in her closet which has a 'safe door'. It's unclear whether Bullock was in a panic room or a room with a reinforced locking door - similar to that of an actual safe. Some celebrities and wealthy persons have so-called panic rooms built into their homes, which they can retreat to for security. These structures can't be broken through from any side and are usually stocked with the necessities to survive for days or weeks at a time. However, a closet with a safe door would likely not have reinforced walls on all sides. While a safe door protects against easy entry to a sealed off room, a panic room's steel structure can keep out fire and has even been built into Tornado alley homes as shelter. Above, Sandra Bullock's Los Angeles home where the incident happened last June. Corbett was reportedly caught on surveillance footage outside the gates of the home each of the three days leading up to his arrest .
The actress was woken up the morning of June 8 by a strange sound .
She walked around her home and found a stalker fan had broken in .
Bullock then locked herself in her closet, which has a safe door for security, and called police .
On Thursday, accused intruder Joshua Corbett had a hearing in LA court .
During the hearing, Bullock's emotional call to police was played .
A judge is currently deciding whether there is enough evidence to put Corbett on trial for stalking and breaking into Bullock's home .