D.C. police detectives searched a house this week seeking evidence that could link the killing of a Pennsylvania man to a shooting hours later in the same Northeast Washington neighborhood, investigators wrote in court papers.

George F. Longshore, 58, was shot to death after he and three relatives left a wedding reception and were robbed and attacked last Saturday in Brookland. Police have been investigating whether the killing might be tied to the shooting of a 21-year-old Catholic University student. The student was wounded during a dispute at a house party a few blocks from where Longshore was killed, authorities said.

Detectives arrested Albert L. Booth, 25, on Tuesday and charged him with assault with a deadly weapon in the shooting of the student. Booth is being held without bail. No charges have been filed related to Longshore's death.

In an affidavit supporting a search of a residence used by Booth in the 700 block of Faraday Place NE, police noted similarities between the two crimes. In both shootings, an assailant wore a gray sweat shirt and used a silver handgun, detectives wrote. They also noted that Booth "is known to use firearms in the commission of robberies."

Longshore and his wife, daughter and son-in-law were leaving the reception at St. Francis Hall at the Franciscan Monastery, in the 1400 block of Quincy Street NE, when they were approached by at least two men, police said.

The men produced handguns, demanded money and began "pistol-whipping the victims," police wrote in the affidavit filed Wednesday in D.C. Superior Court.

Among the new details about the crimes disclosed in the warrant, police wrote that the robbers took a black velvet purse, a small clutch purse and a wallet from the victims. About five hours later, at 4:15 a.m., a shooting occurred after at least two men crashed a party held by Catholic University students at a house in the 1000 block of Newton Street NE, police wrote in charging documents and the search warrant.

One of the men punched a resident in the face when the students tried to make the party crashers leave, police wrote.

The assailant, who was wearing a gray sweat shirt, then fired a shot from a silver handgun as he ran down the front steps of the house, police wrote. Before fleeing in a light-blue Acura Legend, the gunman fired three more shots, striking the student once in the abdomen, police wrote.

Two people at the party identified Booth in a photo array as the gunman, police wrote.

At Booth's house, police were seeking DNA evidence, guns, the wallet and a purse stolen during the robbery of Longshore and his relatives, the affidavit states.

On Wednesday, police searched the house and recovered a firearm, two boxes of ammunition and a gray sweat shirt, among other items, according to the affidavit.

The search warrant did not state what type of gun or ammunition was recovered. Police declined to discuss the case yesterday.

Police have said that Longshore's relatives could not identify any suspects in a photo array. Firearms technicians determined that badly damaged slugs recovered from each crime scene were not fired from the same weapon, police wrote in the affidavit.

Staff writer Henri E. Cauvin contributed to this story.