Zymire Hughes, 22, was taken into custody by the U.S. Marshals Service Nevada Violent Offender Task Force at about 8 p.m. in Las Vegas. He is being held at the Clark County Detention Center pending extradition to Pennsylvania.
"Tonight, the fear that one man brought to the Philadelphia community comes to an end," said Supervisory Deputy U.S. Marshal Robert Clark.
WATCH FULL: US Marshals announce arrest of suspect wanted for terrorizing Philadelphians
US Marshals announce arrest of suspect wanted for terrorizing Philadelphians
Investigators said Hughes fled Philadelphia on Aug. 19, first flying from Trenton-Mercer Airport to Orlando, Florida. Authorities said he later flew from Orlando to Harry Reid International Airport in Las Vegas.
According to Clark, investigators tracked Hughes to an apartment in southeast Las Vegas, where they believe he remained for about five days.
"We've actually worked on this since last Friday. They worked through the weekend. And we just tried to narrow things down to a point today where everything came together," said Clark.
Investigators say Hughes chased and harassed people in Center City during the early morning hours of Aug. 15. Police believe he may have been motivated by a desire for social media attention.
During a briefing last week, Philadelphia Police Capt. Jason Smith said Hughes encountered as many as 15 or 16 people that morning. In several incidents, police said Hughes approached victims while wearing what authorities described as a "distinctive Chucky doll-style Halloween mask."
The first incident happened around 5:01 a.m. at 10th and Chestnut.
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In one incident, Hughes is reportedly seen approaching a woman jogging near City Hall and asking her, "Are you ready to die?"
Police said the woman ran away screaming for help and seriously injured her leg while trying to escape.
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"It's going to require extensive medical treatment, from what I understand, in order to treat the injuries that she has sustained," Smith said last week.
Surveillance video shows Hughes entering SEPTA's Suburban Station around 5:35 a.m., where police reportedly asked him to remove the mask. Investigators said he attempted to conceal his identity while moving through the station.
Police said Hughes continued trying to frighten people before evading officers. Authorities believe he boarded a Route 33 bus at about 5:59 a.m. and traveled to an apartment in the area of 23rd and Venango streets.
Officials said Hughes has ties to both California and Las Vegas through employment and also has family in Philadelphia.
WATCH: New videos show suspect wanted for terrorizing Philly residents
New videos show suspect wanted for terrorizing Philly residents
Authorities said Hughes appeared confused about his arrest when he was taken into custody.
"He actually tried to get out of the handcuffs and had to be subdued by deputy marshal," Clark added.
Investigators said Hughes had been living in Las Vegas since February. Authorities believe he initially stayed with a girlfriend before relocating to another apartment after his photograph began circulating publicly.
He is facing charges including terroristic threats, harassment, simple assault and intimidation.