WILLIAMSBURG, JULY 31 -- A husband and wife from Indiana were shot during a holdup at historic Colonial Williamsburg Monday evening as they strolled within sight of dozens of other tourists.

The assault, which occurred at 8:37 p.m. while it was still light enough to see, was the latest and most violent of five armed robberies of visitors to the historic park since late May, police said.

Ann Edds, of Swayzee, Ind., was being treated at Williamsburg Community Hospital today for a gunshot wound that shattered teeth and left a bullet lodged in her throat, police said. She was in stable condition and may be released as soon as Wednesday, according to a nursing supervisor at the hospital.

Her husband, David Edds, a high school principal and former history teacher who has visited the park often, was treated Monday night and released after a bullet, from what police believe was a .22-caliber handgun, grazed the right side of his head.

No arrests have been made. Police are looking for two teenagers, one of whom brandished a small blue-steel pistol while demanding cash from the couple, police said. The youth started firing after the couple said they had no money, authorities said.

Police said the two youths, both estimated to be ages 15 or 16, fled on foot after the shootings and later may have driven off in a white Ford Escort.

The shootings occurred on a wide grassy strip at Colonial Williamsburg known as the Palace Green in front of the Governor's Palace. The entire park -- a 173-acre re-creation of Virginia's former capital as it looked in the 1700s -- is one of the state's most famous tourist attractions and draws 1.2 million visitors annually.

"This is pretty frightening," said Williamsburg police Maj. James M. Yost, who is investigating the shooting. "These {attackers} were crazy to pull a stunt like this . . . . There were scores of people around and those bullets could have hit anyone.

"We've never had this degree of violence -- nothing this brazen" during previous incidents at Colonial Williamsburg, Yost said.

However, recent muggings already had persuaded Colonial Williamsburg officials to increase private armed security patrols at the park, spokesman Ken Kipps said.

Two Williamsburg men have been arrested in two of the earlier holdups, Yost said, and both are awaiting trial for armed robbery.

"I can't attribute it to anything," Kipps said of the increase in muggings.

He said previous criminal activity at the park usually has been confined to occasional purse-snatchings or shoplifting.

Yost declined to speculate on why muggings are on the rise there, but said, "We are investigating to see if there are connections between the incidents."

He said tourists in the park "are as safe as they've ever been," but said visitors might be wise to "stroll in parties" after sundown.

Charles R. Longworth, president of the Colonial Williamsburg Foundation, released a statement that said:

"We are saddened by this unfortunate experience. This was a history-minded young couple here on vacation. We face the problem of being a part of the world where guns are commonplace today, where people seem to be acting less civilized. But we have a very fine security force and an excellent city police force.

"We are taking steps to intensify security to address the source of the problem, and to insure the safety of our employees and our visitors."

David Edds, 39, is principal of Eastern High School in Greentown, Ind., near Kokomo. Ann Edds, 32, is a homemaker who plans to become a part-time teacher this fall. They have two young sons. Their hometown of Swayzee has a population of 1,100.

The park was operating as usual today, with throngs of tourists milling around in sweltering heat, viewing attractions such as the former capitol where the Virginia legislature met until the 1780s, and the Governor's Palace where Thomas Jefferson once lived.

Most people interviewed were unaware of the previous night's shootings.

Among those who knew, the reaction was mixed.

"I wouldn't give it a second thought. There are crazies everywhere, and there's nothing you can do about it," Ohio visitor Esther Foster said of possible threats to her safety at the park.

But her daughter, Donna Neu, visiting the park with young children, said that since the shooting she would "think twice" before strolling the Williamsburg grounds at night.

"If you think about it, this would be a good place" for muggers because of the large number of affluent tourists among the many buildings and trees behind which attackers could hide, Foster said.

The Colonial Williamsburg Foundation, which began after oil magnate John D. Rockefeller Jr. became interested in restoring the area in 1926, has offered a $2,500 reward for information leading to the arrest and conviction of the two shooting suspects.

Crime Line, a local anti-crime service, has offered an additional $1,000 reward.