"Anybody who contacts him needs to be aware that he is armed and dangerous, " he said.
Both are wanted on warrants unrelated to Clements' death, and authorities believe they are armed and dangerous.
He had an "extensive and violent criminal history" and was considered armed and dangerous, according to police.
Police consider Harris to be armed and dangerous and say he has an extensive criminal history, CNN affiliate KLAS reported.
He is considered to be armed and dangerous, the sheriff's department said.
Haste testified in the grand jury that the radio transmissions convinced him Graham was armed and dangerous when he shot him in the chest.
Police in neighboring states have been asked to look for the sport-utility vehicle, and Gillespie warned the occupants should be considered armed and dangerous.
"We have strong cause to believe Dorner is armed and dangerous, " Maggard said, adding that the LAPD and FBI are assisting in the case.
Police warned residents that the at-large suspect was armed and dangerous.
But a series of clues, some relating to a scooter used in the attacks, instead led investigators late Tuesday night to the apartment in Toulouse where Merah holed up under siege, armed and dangerous.
"We're grateful to the border officials at Lynden, Washington, for their excellent work in arresting a man we believe was armed and extremely dangerous, " Bob Hassel, superintendent of the Edmonton Police criminal investigations division, said in a statement.
In the early days of gun control, the Sullivan Act was pretty much explicitly passed by the Tammany Hall crowd to make New York safe for thugs, for whom ordinary armed citizens were making life dangerous.
Afterwards, New York Mayor Michael Bloomberg, who is an advocate for tighter gun control laws, said the NRA's response was "a paranoid, dystopian vision of a more dangerous and violent America where everyone is armed and no place is safe".
Mistakes like the American shooting-down of an Iranian airliner in 1988 become a lot more dangerous in a crisis where there are nuclear weapons armed and ready.
The plant had drawn down the level of expatriates in 2012 out of concern that there wouldn't be sufficient drivers for trips to and from the airport, which took more than an hour and were seen as dangerous enough that each bus was accompanied by an armed escort involving at least six vehicles filled with Algerian soldiers.
WSJ: Algeria Probes Possible Role of Local Workers in Attacks
Responding to a home invasion robbery Friday morning, the Nassau County officer was told a man with a gun was inside the house but he was confronted with an even more complicated, dangerous situation when he stepped inside, authorities said: an armed suspect, holding a young woman in a headlock and using her as a body shield.
WSJ: Police Responding to Home Invasion Were Unaware of Hostages in Standoff
The alleged cell, he said, was "probably the most dangerous" France had seen since the Algerian-based GIA (Armed Islamic Group), which carried out a series of attacks in 1995-96.
The most dangerous episode of the hostage crisis occurred at first light on Monday morning when the hijackers saw armed security forces surrounding the plane, said the crew.
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