San Diego police officers pulled the man out of a canyon along Gilman Drive and Via Alicante around 8:30 p.m.
"We are still involved in an active investigation and looking into all leads," San Diego police Lt. Paul Phillips said.
On Saturday night, a man followed a woman through her parking complex to her University City home before forcing her into her apartment and sexually assaulted her.
The woman in her 20s was walking toward her home in the Venetian Apartments at 3929 Nobel Drive Saturday around 10:30 p.m. when she noticed a man following her through the parking garage, Lt. Phillips said. As she unlocked her apartment door, the armed man knocked her to the ground and demanded she give him money.
He proceeded to force woman into her apartment and choked her before sexually assaulting her, Phillips said. He ran away.
Police described the suspect as a black man in his mid to late 20s, about 5-feet, 10 inches tall, weighing 180 pounds with an athletic build. He had short black hair and a black beard. He wore a gray hooded sweatshirt, gray shorts with red stripes on the sides, black sneakers and black backpack.
The victim suffered facial fractures and remained in the hospital.
The man was brazen enough to stalk the victim through well-lit areas before attacking her, Phillips noted.
Police said Wednesday they are still pursing all leads in the violent crime.
Crime Stoppers is also offering a reward of up to $1,000 for tips leading to an arrest. People can report tips and stay anonymous by calling (888) 580-8477, visiting their website, or by texting to CRIMES (274637).