MIDTOWN (WABC) -- Luigi Mangione, a suspect charged in the murder of UnitedHealthcare CEO Brian Thompson, was taken into custody on Monday in Pennsylvania, nearly one week after the "brazen, targeted" shooting outside a Midtown Manhattan hotel on Wednesday, police said.
Police say 50-year-old Brian Thompson was shot around 6:45 a.m. outside the New York Hilton Midtown.
A 26-year-old suspect wanted in connection with the murder was arrested at a McDonald's in Altoona, Pennsylvania, after being identified by an employee.
Mangione faces a second-degree murder charge in New York, in addition to counts including possession of a loaded firearm, possession of a forged instrument and criminal possession of a weapon.
Authorities in Pennsylvania have also charged Mangione with five crimes, including carrying a gun without a license, forgery, falsely identifying himself to authorities and possessing "instruments of crime," according to a criminal complaint.
MORE: Who was Brian Thompson, the UnitedHealthcare CEO fatally shot in NYC
Eyewitness News and ABC News have been piecing together what led up to the shooting as investigators work to figure out what happened.
Here's a timeline of events:
Before the shooting
Law Enforcement sources told ABC News the suspected shooter arrived in New York last month on a bus that came from Atlanta.
The killer entered New York City by bus on Nov. 24, when a surveillance camera at Port Authority Bus Terminal caught his arrival at 9 p.m., law enforcement sources told ABC News.
On November 30, the suspected shooter checked into the HI New York City Hostel on the Upper West Side using a fake New Jersey license to sign in as Mark Rosario from Maplewood, New Jersey, police sources told ABC News. It's believed he arrived in the city prior to that date and detectives continue their video canvass to gain a fuller picture of his movements.
On Thursday, police released the first images of the suspect's face uncovered taken from surveillance video from inside the hostel.
Police were able to find an image of the suspect without his face mask because he was flirting with the woman who checked him into the hostel, police sources told ABC News.
As he stood at the check-in desk, the sources said the woman asked to see his smile. The shooter obliged, pulling down his mask long enough for the surveillance camera to capture his face.
After the shooting, the NYPD obtained a warrant to search the hostel.
Wednesday, Dec. 4 5 a.m.
The suspected shooter was seen on video outside the nearby Frederick Douglass Houses public housing project, carrying what appears to be an e-bike battery, police sources told ABC News.
6:15 a.m.
Surveillance footage reviewed by police shows someone who appears to be the suspect exiting the subway before the shooting at the 57th Street station on the F line, just blocks from the shooting scene.
Before the shooting
Sometime before the shooting, the suspect is spotted at a Starbucks. The exact time is not clear.
Around 6:39 a.m.
According to investigators, the suspected shooter arrived at the scene about five minutes prior to Thompson.
"It appears the suspect was lying in wait for several minutes," NYPD Commissioner Jessica Tisch said during a briefing Wednesday morning. "Many people passed the suspect but he appeared to wait for his intended target."
6:44 a.m.
The victim was seen on video leaving a hotel across the street where he was staying and walking towards the Hilton.
"The shooter steps onto the sidewalk from behind a car... approaches the victim from behind, and shoots him in the back. The shooter then walks toward the victim and continues to shoot. It appears that the gun malfunctions, as he clears the jam and begins to fire again," NYPD Chief of Detectives Joseph Kenny said.
Thompson was struck in the back and the leg.
The suspected shooter then fled, first on foot into an alley.
He was later seen riding an electric bicycle north on Avenue of the Americas.
6:46 a.m.
"Patrol officers from Midtown North precinct responded to a 911 call of a person shot in front of the Hilton hotel," Kenny said.
6:48 a.m.
The officers found Thompson on the sidewalk and he was later removed by EMS to Roosevelt Hospital.
In the same minute, the suspected shooter was seen riding into Central Park at Center Drive.
6:59 a.m.
Video obtained by ABC News shows the suspected shooter riding west on West 85th Street.
7:12 a.m.
Thompson was pronounced dead at the hospital.
Dec. 6
Canvassing Central Park with drones and officers on Friday afternoon, police recovered what is suspected to be the backpack carried by the suspected shooter. The suspect is seen carrying the bag prior to the shooting, but does not appear to have it in video of him on a bike 15 minutes after the shooting. The backpack was reportedly found with clothes and Monopoly money inside.
Dec. 7
NYPD officers searched the pond near Bethesda Fountain in Central Park for possible evidence tied to the shooting death.
After biking out of Central Park, the man believed to be the shooter went on foot at Columbus Avenue and West 86th Street and hailed a taxi, which took him north to the George Washington Bridge Bus Station, a Port Authority-operated bus terminal at 178th Street.
He never exited the facility, and he is believed to have taken a bus out of New York City, officials say.
Dec. 9
On Dec. 9, the suspect in the shooting -- 26-year-old Luigi Mangione -- was identified and taken into custody in Altoona, Pennsylvania, on unrelated gun charges, authorities said.
That evening, he was charged with five crimes, including carrying a gun without a license, forgery, falsely identifying himself to authorities and possessing "instruments of crime," according to a released criminal complaint.
Luigi Mangione was then charged with second-degree murder in New York, in addition to counts including possession of a loaded firearm, possession of a forged instrument and criminal possession of a weapon, the Manhattan District Attorney's Office confirmed.
Mangione was on a Greyhound bus traveling through Altoona, sources said, when he got off and walked into a McDonald's where a witness recognized him from the images of the suspect circulated by police.
Mangione, from Maryland, was in possession of a handwritten document "that speaks to his motivation and mindset," NYPD Commissioner Jessica Tisch said.
"It does seem that he had some ill will toward corporate America," police said.
Mangione had a ghost gun capable of firing a 9 mm round and a suppressor, police said.
He was also in possession of a fake New Jersey driver's license similar to the one the suspect used to check into a hostel in New York City before the shooting, she said.
Tisch praised the "good old-fashioned detective work" of the NYPD and the "power of the public" that led to the arrest.
Police said they're working to trace his movements from New York City to Pennsylvania.
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