Gunman Maryland Mall wrote kill people

Jose Luis Magana / AP

Kathren Cameron placed a bear at the Mall later reopened to the public, Monday, January 27, 2014, in Columbia, Maryland.

Hasani Gittens, Editor of noticias, NBC News

The young man who killed two employees of the skate shop and then killed himself inside a mall wrote about killing people in his diary and said that he was willing to die, the Maryland Police revealed on Wednesday.

Howard County Police released details of the magazine by Darion Aguilar via his Twitter account.

Researchers say the Aguilar 19-year-old killed Brianna Benlolo, 21, of College Park, MD., and Tyler Johnson, 25, of Mount Airy, MD., at a skateboard hats store in the shopping center in Colombia and then took his life. Detectives have been trying to determine a motive.

Police now say Aguilar wrote in general terms in his diary about killing people--but he said targeting certain people or places. Police say that the magazine "expresses one general hatred of others" and the willingness to die.

They said it showed that "you knew that he had mental health problems."

Brochure / Reuters

Darion Marcus Aguilar, 19, of College Park, Maryland, identified by police as the gunman on Saturday Columbia Mall shooting, is seen in a photo without date released by the Howard County Police Department.

It also apologized to his family for what he planned to do, they said.

On Wednesday police also detailed how Aguilar riding shotgun before the massacre.

Aguilar took the unfixed Mossberg shotgun 12 gauge in the Mall in a backpack, said the Howard County Police Department on his Twitter account.

Aguilar, who also lived in College Park, MD., assembling the shotgun in a dressing room at Skate hats store.

Aguilar came out of the dressing room, he shot the victims and then committed suicide, police "believed", they said. Before, the researchers said that Aguilar had spent at least an hour at the mall before the spree.

The skate shop had no there are video cameras, so there is no material from the shooting, he said. The police has said that Aguilar had six shots.

At one point, he left the store and injured a woman who was hit in the foot, police said.

Aguilar was dead when officers arrived less than two minutes after the first call to 911, police said.

Researchers have not a motive for the shooting. Police said that they have not appeared any relationship between the employees of the shop and Aguilar.

Police believe that Aguilar purchased legally the shotgun last month. The attack was the latest in a series of shootings in the United States, which has renewed questions about the vulnerability of public places in the United States.

Reuters and The Associated Press contributed to this report