Cameron Silcott, 24, and Nichelle Greene, 27, were arrested Thursday night in connection to the shooting death of Baltimore bus driver, Marcus Parks, earlier that day

Silcott and Greene both face murder and gun-related charges

Park, 51, a 20-year veteran of Maryland Transit Authority, was shot dead Thursday morning on his bus route after an argument with a would be passenger

Silcott, the alleged shooter, attempted to board the bus which was going out of service, but the driver would not let him on

The pair argued before the suspect grabbed the driver’s bag and fled, and when the Parks gave chase, the robber pulled out a gun and shot him

Witness said the gunman executed Parks while standing over him

Police in Baltimore this morning announced the arrests of two suspects in connection to the killing of a Maryland Transit Authority bus driver, who was shot dead during an argument with a would be passenger who robbed him on Thursday morning. 
Police Commissioner Michael Harrison said 24-year-old Cameron Kane Silcott and 27-year-old Nichelle Nicole Greene were arrested Thursday night at Perkins Homes, just six blocks away from the site of where MTA bus driver Marcus Parks was killed.  
Silcott and Greene both face murder and gun-related charges.

The pair were arrested without incident following a three-hour standoff with police, during which neighbors were asked to shelter in place, according to the CBS Baltimore. 
The shooting happened on East Fayette Street at around 10.30am as the bus Parks was driving stood empty after letting out all the passengers.
According to a statement from police, the male suspect tried to board the bus, but Parks told him that no passengers were allowed in the vehicle. 
An argument ensued, during which the suspect grabbed the driver’s bag and took off, according to police. 
Parks got off the bus and gave chase, at which point the suspect shot him. 

The shooting happened on East Fayette Street in Baltimore at around 10.30am on Thursday.
According to police, one of the suspects and the 51-year-old bus driver argued before the shooting in the 1200 block of East Fayette Street.
“Everyone had just gotten off of the bus,” Baltimore Police Department spokesperson Donny Moses said. The suspect tried to get onto the bus at which time the bus driver told him that no passengers were allowed on the bus at that time.”
That led to an argument between the two, during which the suspect grabbed the bus driver’s bag and the driver chased him, police said.
During that chase, the suspect shot the bus driver.

Addressing a press conference on Friday Police Commissioner Michael Harrison said: “The initial information we received was not only heart-wrenching but also shocking to the conscience”.
Bystander Teddy Knight who witnessed the shooting, recounted to Baltimore Sun, seeing the victim fall over a fence and get executed by his attacker.
‘He was laying there and the guy came back and shot him again,’ Knight said, adding that the gunman fired multiple shots at the wounded driver as he stood over him. 
A police officer who was in the area heard the gunfire and tried to apprehend the shooter, but he could not catch him. 
Parks was pronounced dead at the scene by first responders. 

Commissioner Harrison credited ‘good old-fashioned detective work’ and tips from the community with apprehending the suspects.  
Parks grew up in East Baltimore and played basketball there as a teen, had worked the MTA for 20 years. He is survived by his three sons.

Baltimore Mayor Jack Young described Parks as a personal friend whom he first met playing basketball. 
‘He wasn’t a troublemaker. He tried to make sure that he resolve conflicts with anybody that had conflicts and he was just a great guy,’ Young said. 

Maryland Governor Larry Hogan addressed Parks’ killing on Twitter and offered his support to the police investigation. 
‘We are horrified by the senseless killing of an @MTAMaryland bus operator this morning—one of our frontline essential workers who was just doing his job,’ he wrote before thanking police for the swift apprehension of the killers.