The San Bernardino County Sheriff’s Department is looking for a man or men suspected of firing a shot into the air and robbing a woman in two separate incidents on Saturday and Monday near Arbor Park in Rancho Cucamonga.

Authorities said deputies responded to Arbor Park on Saturday at around 9:30 p.m. after getting reports of shots fired in the area.

People at the park told the sheriff’s department that they were approached by a man wearing a plastic mask. That man yelled at the park visitors to run and fired one shot into the area. The man who shot into the air was not found after deputies searched the area.

Two days later, deputies responded to reports of a robbery in the same area at around 9:20 p.m.

According to the sheriff’s department, a woman said she was walking along a trail near Arbor Lane when she noticed a man, who was wearing a plastic mask, walking toward her.

“When the suspect passed her, he turned back and pointed a small silver handgun at her,” authorities said.

Officials said the man demanded that she give him all of her belongings. The woman did what was demanded and ran away. She attempted to get help from nearby residents, but wasn’t able to.

Deputies again searched the area but didn’t find the man. In the first incident, the man was described as approximately 5-feet-10-inches tall. He was wearing a hoodie, sweatpants and black Vans.

Anyone with information can contact the Sheriff’s Department at 909-477-2800. Those who want to remain anonymous can call We Tip at 1-800-782-7463.