Prince George's County Police released surveillance footage of a suspect wanted in connection with a shooting death during an attempted robbery. (Prince George's County Police)

In the short time he worked at the store, regular customers of the 7-Eleven on Brandywine Road in Clinton, Md., were almost always greeted by the quiet, friendly smile of Taiwo Oduwole.

The native of Nigeria was behind the counter “morning, noon and night” as he worked to pay for his master’s degree, said Phyllis Boone, a longtime Clinton resident who often visited the convenience store.

“He was the face of the 7-Eleven,” Boone said. “You can’t walk into the store without seeing him.”

But Sunday morning, during one of Oduwole’s early shifts, a masked man armed with a gun entered the store and demanded money, police said. The man assaulted Oduwole, who managed to jump over the counter in an attempt to escape. Then the gunman shot Oduwole in the back — twice.

“Our suspect raised his gun, pointed it at our victim and shot him in his back one time,” said Capt. Brian Reilly, the head of the homicide unit for Prince George’s County Police. As Oduwole made it out the door, “the suspect then, a second time, raised his gun and shot Mr. Oduwole in the back again. Mr. Oduwole collapsed in the parking lot.”

Taiwo Oduwole (Family Photo)

Police released video Monday of a suspect wanted in connection with Oduwole’s slaying. Police hope that the images showing a man wearing a distinct North Face jacket with a backpack attached to it will lead to an arrest in the killing of the recent immigrant from Nigeria.

Oduwole, 31, died at a local hospital. The gunman left the convenience store without any money, Reilly said. About 30 minutes later, the same masked man robbed a hotel down the street, he said. Police said they are also looking for a second suspect in the case who probably drove a getaway car in both incidents.

“This is an absolutely senseless crime that should have never taken place,” Reilly said of Oduwole’s shooting. “It’s a heartless and cowardly act.”

Family gathered at Oduwole’s home in Upper Marlboro on Monday were too grief-stricken to speak at length.

“It’s tough to talk about right now,” said a man at the door who identified himself as Oduwole’s brother but did not provide his name.

The man described his brother as an intelligent, kindhearted and decent person.

“He touched everyone who he comes across,” Oduwole’s brother said. “Everybody misses him.”

Keith Turner, an active member of the community and regular customer, was at the store early Monday morning with Boone and other neighbors to remember Oduwole.

“He was really nice,” Turner said of Oduwole. “He didn’t have to die over some money.”

A police flier showing an image of the suspect sought by police was taped to the front of the store. Turner pointed at the man’s picture and called him “trifling.”

“We’ve got to come together, get this guy and make him an example,” Turner said.

Boone, who also was at the ­7-Eleven on Monday morning, remembered Oduwole as someone who was respectful and generous. When kids in the neighborhood came into the store and they couldn’t afford a drink or a treat, Oduwole would often take some of his own money and pay for them, Boone said.

She called Oduwole’s killing “disgusting.”

“This coward has taken away a beautiful person in this community,” said Boone, who has lived in the Clinton area for 25 years. “He had just a wonderful spirit.”

Police on Monday announced that the reward in the case has increased to $50,000 from $25,000 with the FBI contributing additional cash for information leading to an arrest and indictment. Police are asking anyone with information about the case to call 301-772-4925, or to remain anonymous, ­1-866-411-TIPS (8477).

Oduwole’s slaying was one of three fatal shootings that occurred in Prince George’s over the weekend. D.C.-area rapper Swipey, whose real name was Douglas Brooks, died in a targeted shooting shortly after 1 a.m. Sunday outside a house in Suitland, police said. Two groups confronted Brooks in the parking lot of an apartment building and shot him, Reilly said.

Police are also investigating the fatal shooting of Damien Rowlett, 22. Rowlett was shot around 1:30 a.m. Sunday and died at a local hospital.