"It is more likely a random act than anything else, but we're going to look at all possibilities", Police Chief Peter Newsham said during a Wednesday news conference, adding patrons at the restaurant "did the best they could" to save Martinez's life.
It was a picture-perfect night to be outdoors, with temperatures in the 70s and clear skies.
The vigil drew a crowd of people who wanted to remember the life of Martinez, who was fatally stabbed September 18 near 11th and P Streets in Northwest D.C.
Washington police are yet to track down the identity of the attacker, who they believe was working on their own.
The description is based on a grainy surveillance video from the Chinese restaurant's security camera. She appears to be talking to customers inside before she collapses.
"Wendy was not only handsome and not only brilliant and a hard worker. she was joyful, funny, loving and always there", said Moore, adding that Martinez was "just determined to live out the American Dream".
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- A suspect wanted for stabbing a woman to death in Logan Circle has been arrested, D.C. police announced on Thursday. "Defendant stated however that the detectives were accusing him of stabbing an individual in the course of the homicide, and in specific a 'little girl, '" D.C. police officer Alexander Vogel reportedly wrote in the charging document, according to WTOP.
In addition to the items listed above, police also collected an umbrella and white socks with possible blood on them. Furthermore, Crawford has a criminal history and did not cooperate with police. K-2, also known as "spice", is a synthetic marijuana that is banned in the U.S.
"Wendy should have been shopping for her wedding dress on Friday", said a friend of Martinez's, Kristina Moore, through tears.
"We are deeply saddened by this senseless tragedy". She lived near where the attack happened. Her family described her as an avid runner.
Martinez, who became engaged just last week, was stabbed a total of seven times - mostly to her upper body, including her neck and head, the papers said. Her body was found last month.
"We're asking for anyone who may have seen someone fitting that description in this area to please give us a call", Newsham said. This is a very isolated incident. "It's very unlikely that this occurred here at the intersection", Chief Newsham said.
"My heart has been broken in a thousand pieces", Cora Martinez told the crowd of people huddled near the statue in Logan Circle Thursday night, her voice rising with emotion.