Seven men beat a man with a bat at 11:35 p.m. on Friday at 16th and Valencia streets, police said. The 38-year-old victim suffered a swollen eye and cheek and was taken to the hospital.
No arrests have been made.
A man and a woman were beaten and robbed at about 2:25 a.m. Saturday on 24th Street near Harrison.
Four men knocked the woman to the ground and hit her before fleeing. The man ran after them, and the four suspects beat him and robbed him of his cell phone.
The victims complained of pain and a scraped knee but refused medical assistance. No arrests have been made.
A man was arrested Saturday shortly before 4 a.m. after robbing and beating a man at 24th and Mission streets. The suspect attempted to flee after attacking the man but police took him into custody.
The victim suffered a contusion to the back of the head and was taken to the hospital.
A woman was robbed as she was walking on Guerrero near 24th Street around 10:45 p.m. on Saturday.
The suspects, described as two men between the ages of 20 and 30, sneaked up behind the 23-year-old victim and hit her in the head several times with a pipe. The victim fell to the ground, and one of the suspects snatched her cell phone and fled on foot.
The victim suffered head trauma and laceration and was taken to the hospital.
Three 25-year-old men were arrested around 2 a.m. on Sunday after they attacked and robbed a man at 16th and Mission streets.
The suspects struck the victim, knocked him down to the ground and took his cell phone and some cash before fleeing. Police were later able to take the suspects into custody.