"We are attempting to look at other sources of video, photos" to release publicly, FBI spokesman Special Agent Richard Wolf said Monday. He would not say where authorities might be looking for surveillance footage, or where the suspect might have stopped during his daylong ride with Ripken in Ripken's 1998 Lincoln Town Car.
Last week, Aberdeen police released two images of a man wearing an orange baseball cap and light-colored shirt standing in front of what appears to be a business. Police identified him as a suspect in the 74-year-old's abduction.
Ripken, the wife of late Orioles manager Cal Ripken Sr. and the mother of baseball players Cal Ripken Jr. and Billy Ripken, was taken from the garage of her Aberdeen home last Tuesday and returned unharmed a day later.
Aberdeen police Lt. Fred Budnick called the security camera images "a turning point in the investigation" last week. On Monday, he said the department has continued to receive tips, which are being forwarded to investigators.
"We're still concerned that he's armed and dangerous," Budnick said.
Authorities have divulged little additional information, such as whether the investigation has led them out of state.
Although Ripken was unharmed, the incident has raised concern among some residents in the otherwise quiet Harford County city.
"I think everybody kind of took it personally," said Aberdeen City Councilwoman Sandra Landbeck. "She [Ripken] is such an integral part of the community."
John Maroon, a spokesman for the family, declined to give a statement.
Police described the suspect as a white man in his mid-30s to mid-40s, about 5 feet 10 inches tall and weighing 180 pounds. He has short brown hair and wore glasses.
Anyone with information is asked to call Aberdeen police at 410-272-2121.