San Diego Police are warning women not to walk alone after two victims reported being assaulted in North Park in the last week.

The most recent case happened Saturday around 9:40 p.m. as a lone woman was walking on the 2700 block of Lincoln Avenue.

She told police she was hit from behind by two suspects and was knocked to the ground. One suspect grabbed her clothes and tried to pull them off, police say, but the woman fought back.

When she yelled for help, the suspects darted away in an unknown direction. Two bystanders rushed in to help the woman, but neither they nor the victim saw what the suspects looked like.

In a similar incident, a woman was walking alone on June 17 around 11:30 p.m. on the 3200 block of Meade Avenue when she was attacked by two men.

However, she fought back, and the suspects soon took off.

Police say this victim got a look at her attackers, describing the first as a man about 28 to 29 years old, 6-feet tall, wearing a hooded sweatshirt.

The second suspect is described as a man about 23 to 24 years old, 5-foot-7 to 5-foot-8, wearing a black shirt and braces.

Police have released a composite sketch of the second suspect (which is pictured on the right.)

The SDPD is asking women in the area to be aware of their surroundings and avoid walking by themselves.

If you have information about these assaults or suspects, call Crime Stoppers at 888-850-8477 or the SDPD Sex Crimes Unit at 619-531-2210.