1:40pm Update:
The suspect in today's shooting in Orlando has been arrested.  

Jason Rodriguez, 40, told reporters at the jail that he shot people because "they left me to rot."  He repeated the phrase several times before he was brought inside the jail for processing.

The shooting occurred at the architectural and engineering firm that fired Rodriguez back in June of 2007. He was found just a few hours after the shooting at his mother's Orlando apartment where he surrendered to police without incident.

1:20pm Update:
As with many breaking news stories of this magnitude, the numbers continue to change. 

Six people have been confirmed injured in the shooting and one of those victims has died, the Orange County Sheriff's Office has confirmed.

1:10pm Update:
The gunman responsible for this morning's office shooting in downtown Orlando has been identified as 40-year-old Jason Rodriguez.

A police spokeswoman says Rodriguez was a former employee at the Smith, Reynolds & Hills Company located in the downtown tower.

Witnesses say he went into the Gateway Center building at One Legions Place in downtown Orlando and opened fire on the eighth floor.  Another victim was found on the 12th floor.

In all, eight people were taken to the hospital with critical injuries and there are reports of as many as two fatalities.

The gunman is not in custody.  Police consider Rodriguez armed and very dangerous.

12:30pm Update:
The Orlando Sentinel reports 2 are dead and 17 shot at downtown Orlando office building. CNN affiliates say only 8 people have been wounded. The suspect is believed to be named Jason Rodriguez.

Original Story:
A gunman was at large after firefighters and police responded to a reported shooting Friday at a high-rise building in Orlando, Florida, authorities said.

Authorities received a report shortly before noon of a shooting on an upper floor of the high rise, said John Tormos of the Orlando Fire Department.

A spokesman for the Orange County Sheriff's Office, which is helping the city police department, said investigators are looking for a man wearing a blue Polo shirt, gray vest and blue jeans.

"We're in a search mode for the gunman," said Jim Solomons, a spokesman for the sheriff's office.

CNN affiliate WESH reported that at least eight people were shot at the Gateway Center -- a 16-story building near Lake Ivanhoe and Interstate 4.