The man accused of gunning down 39-year-old Surendra Dangol as he worked his shift at a Jamaica Plain convenience store was ordered held without bail at his arraignment today on murder and other charges, Suffolk County District Attorney Daniel F. Conley said.

West Roxbury District Court Judge Kathleen Coffey withheld bail at the recommendation of Suffolk Chief Trial Counsel Patrick M. Haggan, who told the court that Corliss was “experiencing financial difficulties” in advance of the fatal Dec. 26 armed robbery at the Tedeschi’s on Centre Street.

Corliss undertook efforts to disguise himself, Haggan said, that included donning a wig, a scarf, and a long coat that he padded to make himself look heavier. He also enlisted a driver, who is said to have brought Corliss to the store in a white, four-door sedan.

Corliss almost entered the store twice before committing the robbery, Haggan said, but backed off when he saw prospective customers approaching, then finally entered at 2:56 p.m. Once inside, Corliss allegedly produced a .380 caliber semiautomatic handgun and pointed it at Dangol.

“Mr. Dangol completely complies with whatever orders are given to him,” Haggan said, recounting the images on a store surveillance camera.

Dangol placed the money from his cash drawer into a bag supplied by the gunman. The assailant’s take was $746, Haggan said.

“Mr. Corliss can be seen pointing to Mr. Dangol and then in the direction of the safe,” Haggan said. “The defendant then fires one round, striking Mr. Dangol in the left chest.”

That round penetrated Dangol’s heart and lungs, mortally wounding him, Haggan said. Corliss fled the store and made good his escape.

In the aftermath of the deadly shooting, Haggan said, Corliss made efforts to cover up his link to the crime.

“Mr. Corliss disposed of the wig, hat, gloves, and coat in a dumpster. He also disposed of the murder weapon in a location known to the Commonwealth. In the days after the murder, Mr. Corliss made an effort to conceal unique identifying features” of the getaway car, Haggan said, purchasing an MIT alumni bumper sticker and placing it on the driver’s side door – the side the faced the surveillance camera that filmed it on Dec. 26.

Investigators sought and received the assistance of federal agencies and automotive industry experts who were able to identify the make and model of that car after viewing the surveillance footage. Experts indicated that it was a white Plymouth Acclaim manufactured between the late 1980s and early 1990s.

Armed with that knowledge, investigators undertook “dozens of interviews” with current and former owners of such vehicles, leading them to Corliss and “a positive identification of the motor vehicle by someone who he lives with,” Haggan said.

A search warrant executed at Corliss’s residence turned up $320 “believed to be proceeds from the robbery,” Haggan said.

Corliss was taken into custody on Jan. 7 when his 2006 parole was revoked. Suffolk prosecutors approved a warrant charging him with Dangol’s murder on Jan. 14.

Catherine Yuan is the district attorney’s victim-witness advocate assigned to the case. Corliss was represented today by attorney John Hayes and will return to court on Feb. 26.