What's missing from these descriptions?

When the police appeal to the public for help in locating a suspect, don't you think they should give us as much information as possible?

Let's play a game called "What's not here that should be here?" Here are a couple of recent appeals:

1) "Lewisville police are looking for two suspects who robbed a jewelry store in Vista Ridge Mall around 1:45 p.m. Tuesday. . . After stealing an undisclosed amount of jewelry, the robbers . . . drove away in a red four-door sedan that was missing the mirror on the passenger side. The suspects were then involved in a hit-and-run collision on Round Grove Road. Anyone with information is asked to call the Lewisville Police . . ."

2) "Police are asking for the public's help identifying a man who is believed to have inappropriately touched teenage girls during five separate incidents. . .Police described the man as in his 20s. He was seen wearing a gray hooded top and fled the scene in a dark-colored Honda Civic. . .Anyone with information is asked to call Detective Grand Gildon. . ."

What vital piece of information is missing from these descriptions?

"Police search for suspects in jewelry store robbery."
"Two teenage girls report being grabbed by man."
The Dallas Morning News; April 30, 2014; p. 3B.