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Following a brazen mid-morning attack on a woman walking on a San Francisco street, police are hopeful that surveillance video of her alleged assailant might help them track down a potentially dangerous suspect.

According to San Francisco Police Department spokesperson Officer Grace Gatpandan, a woman walking near Webster and Buchanan Streets was attacked by the man you see in the photos above and video below.

Gatpandan says that the suspect "followed the female victim for a few blocks," then made his attack at around 10 a.m. Thursday.

"The victim was able to escape without any injuries," Gatpandan says, and the suspect was last seen heading east on Grove Street, several blocks from the assault. Police have provided two surveillance video clips of the man as he traveled down Grove, first, at Grove and Steiner:

And again, at Grove and Fillmore:

Gatpandan describes the woman's attacker as "a white male, dark blonde hair, approximately 6’0” to 6’3”, wearing a white long sleeve shirt with an orange vest, and white pants."

According to Gatpandan, the man's clothing was described as "dirty."

Gatpandan emphasizes that if you see this man, you should not approach him, and should instead "call 911 immediately." She also urges anyone with information on the man's identity or whereabouts to call SFPD's Special Victim’s Unit at 415-553-1434, the SFPD Anonymous Tip Line at 415-575-4444, or to text a tip to TIP411 with SFPD at the beginning of the message.

SFPD-BookingPhoto-Adam-Berglund.jpg
Update: According to a press release sent by SFPD on Friday evening, the suspect has been identified as 30-year-old Adam Berglund. Officers arrested him Friday in Chinatown, and he was booked into San Francisco County Jail on the charges of assault with intent to commit rape and sexual battery, both felonies.

Here's the full release from SFPD:

On May 5, 2016 at approximately 10:00 AM, San Francisco Police responded to an assault that occurred on Webster and Buchanan Streets in the Northern District. The suspect had followed the 53 year old female victim for a few blocks before attacking her. The victim was able to escape without any injuries, but the suspect fled and was last seen traveling eastbound on Grove Street towards City Hall.

The suspect was described as a white male, dark blonde hair, approximately 6’0” to 6’3”, wearing a white long sleeve shirt with an orange vest, and white pants. The clothing was also described as being dirty. Police investigators issued an internal “crime alert” within the Police Department and the Media Relations Unit passed the information to the news media with an appeal for public assistance in locating the suspect. An officer from Southern Police Station saw the crime alert and recognized the suspect from prior police contacts. That officer provided the suspect’s name, identifying information and that the suspect claimed to hang out in the Chinatown area.

On May 6, 2016 at approximately 10:50 AM, approximately 24 hours after the assault, officers from Central Police Station detained a man matching the suspect description in Portsmouth Square Park. The officers had previously viewed both the crime alert and the email from the Southern Station officer and they also recognized the suspect as someone they had contacted in the past.

The victim was brought to the scene and she positively identified Adam Berglund, male, 30 as the suspect. Berglund was transported to Central Police Station and later booked into San Francisco County Jail on the following charges: assault with intent to commit rape and sexual battery, both felonies.

Adam Berglund's booking photo: SFPD