Chaos broke out Wedneday afternoon when a 73-year-old man crashed his SUV in a strip mall parking lot.

Officials said the accident happened in the 2600 block of Bayshore Boulevard just after 3 p.m. in Dunedin

According to Pinellas County deputies, Robert Reed, of Dunedin, was driving his 2010 Audi northbound through the parking lot when, for unknown reasons, he accelerated, striking a concrete block wall in front of the Dunedin Family Fitness Center.

Deputies said when Reed's vehicle struck the wall, large chunks of the concrete wall broke apart and struck Jeanette Kelly, 63, of Dunedin who was walking into the gym.

Deputies said Reed continued driving and a few dozen feet away hit Mark Imperato, 55, of Dunedin who was on his bike right in front of the gym.

After striking the bicyclist, deputies said Reed continued northbound through the parking lot before striking a 2004 Nissan Armada driven by Robert Hupp, 65.

"I'm kind of glad that it did hit my car because if it hadn't hit my car it would have gone straight through the trees and there's a call center and there's a restaurant where people are there and a bingo place," Hupp said. "And I'm guessing the car was going 50, 60 miles an hour when it hit my car and it's no telling how many more people could have gotten hurt.

"So I'm fortunate I'm fine and I'm kind of glad that it happened the way it did."  

Investigators are still trying to figure out what caused Reed to speed through the parking lot. Deputies said alcohol and drug impairment are not factors in the crash.

Reed remains in Mease Dunedin Hospital with life-threatening injuries.

Meanwhile, crews will continue to inspect the building damage to determine if businesses in the strip mall can open.