Update: 10:50 a.m. Thursday

Update: 6:40 p.m. Wednesday

Four teenagers were arrested in connection with the lockdown at Arden Fair Mall Wednesday afternoon.

The Sacramento Police and Sheriff's Departments responded to multiple calls from people who thought they heard shots fired shortly before five o'clock.

Police Officer Doug Morse said video surveillance showed what happened.

"There were a group of juveniles who for whatever reason decided to go through the mall up near the food court and they were just causing a disturbance - they were pushing people around, pushing people down, knocking over signs and just causing that disturbance," Morse said.

Morse said about 20 teenagers were involved, but that no shots were fired.  Security locked down the mall with customers inside stores for about an hour.

The mall re-opened by 6 p.m.

Update: 6:20 p.m.

Update: 6:06 p.m.

Update: 5:53 p.m.

Update: 5:42 p.m.

According to the Sacramento Police Twitter feed, any reports of gunfire at the Arden Fair Mall during this afternoons' disturbance are "unfounded."

Update: 5:40 pm.

Sacramento Police and Sheriff's Deparments responded to a call of a person with a gun.  Madeline Adams was in the mall during the 4 o'clock hour to do some after-Christmas shopping

"I was walking down the row and I saw security guards running towards the other end of the mall and I saw everyone fleeing into stores and doors being locked," Adams said.

Adams says she followed suit and was locked down inside the Pottery Barn. She says as of 5:20, the mall was being evacuated. Other people in the mall told Adams there was a fight in the food court.