Updated at 4:45 p.m.: Revised to include additional information from a police news conference.

A person whose body was pulled from White Rock Lake over the weekend was identified Monday as a transgender woman whose death is being investigated as a homicide, Dallas police say.

The discovery of Chynal Lindsey's body about 5:45 p.m. Saturday came less than two weeks after police announced they were investigating similarities among attacks on three other transgender women in the last year.

Police Chief U. Reneé Hall said at a news conference Monday afternoon that Lindsey's body had "obvious signs of homicidal violence."

Hall said the department has reached out to the FBI to assist with the investigation into the 26-year-old Arlington woman's slaying, as it follows recent attacks on other transgender women.

"We are concerned, and we are actively and aggressively investigating the case," she said.

Hall urged anyone with information about the case — including where Lindsey was last seen and people she spent time with — to contact Detective Erica King at 214-671-3684.

Dallas Police Chief U. Reneé Hall spoke Monday about the death of Chynal Lindsey, a black transgender woman found dead this weekend at White Rock Lake. At the news conference, the police department displayed both a recent (right) and older photo of Lindsey. (Tom Fox / Staff Photographer)

Less than a mile from the lake where Lindsey's body was found, 22-year-old Muhlaysia Booker was found fatally shot May 18 on a road bordering the Tenison Park Golf Course.

Maj. Vincent Weddington said at the news conference that the department has four open homicide cases in which black transgender women were killed — the two this year, one from 2018 and one from 2015.

Muhlaysia Booker (Ryan Michalesko / Staff Photographer)

Police haven't named a suspect in Booker's slaying, which came weeks after she was brutally beaten by a mob at an apartment complex in east Oak Cliff.

Booker suffered a concussion and a broken wrist in the April attack, and she told police her assailants had yelled homophobic slurs as they knocked her down and stomped on her face.

Edward Thomas, 29, was charged with aggravated assault after video of the attack went viral that appeared to show him accepting someone's offer of $200 to beat Booker. Police named two other people as suspects in a warrant but have not arrested them.

Police have said they have no evidence linking Thomas to Booker's death.

Officials have asked for the public's help to identify suspects in Booker's death and her assault. Police said May 21 that her slaying was one of those that bore similarities to recent attacks on transgender women in Dallas.

On April 13, a 26-year-old woman was stabbed several times and left for dead in the 2800 block of Troy Street in South Dallas. She survived and described her attacker to police, but they have not released a detailed description of the man.

In October, 29-year-old Brittany White was found fatally shot in a parked vehicle in the 7100 block of Gayglen Drive in southeast Dallas.

Police said two of the victims had gotten into a car with someone, and the third had let someone into her car. Also, police said two of the women had been near Spring Avenue and Lagow Street just before the attacks.

Relatives of Booker and White have said they doubt their loved ones were targeted because they were trans women.

"This was personal," Booker's aunt Quan Booker said last month.

She said that she thinks police are trying to connect the cases to "satisfy the public" but that her niece wouldn't have let anyone she didn't trust into her vehicle.

White's mother, Terry Brown, thinks that she knows who killed her child and that the motive was robbery, not hate.

Although police described White as a transgender woman, Brown said her child identified as Traylon Brown, a gay man who wore wigs and dresses when he went out with men.

Police also have said they were looking into potential ties among the attacks and an unexplained death reported in 2017, in which a transgender woman's body was found in a field in the 2900 block of Wilhurt Avenue in east Oak Cliff.

In May 2018, a transgender woman was found dead in White Rock Creek. That death was eventually ruled a suicide, according to Dallas County medical examiner's records.