The arrest of 45-year-old Billy Chemirmir may have just provided police officers in Dallas, Texas with an unexpected break in a very big case. Chemirmir was originally arrested for the murder of one woman, but police are now investigating the Illegal Immigrant in connection with several murders that occurred in connection with victims using Home Health Care services.

Currently, Chemirmir has been charged with capital murder and attempted murder. According to a police [VIDEO] affidavit, Chemirmir was arrested by police in Plano, Texas. Prior to his arrest, Chemirmir threw a jewelry box into a nearby dumpster. The box contained the name of an 81-year-old murder victim, Lu Thi Harris.

Police suspect that Chemirmir used his position as a home health care worker to murder [VIDEO] and rob his mostly elderly patients. Two unidentified former patients of Chemirmir have come forward and told police that Chemirmir tried to smother them with a pillow. According to these eyewitnesses, Chemimir sat on their chests and used one of their own pillows to try and suffocate them.

Chemirmir is currently being held on a $1 million bond. He is also being detained on an immigration hold due to his illegal status. Chemirmir first came to the United States from Kenya in 2003, and began the process of becoming a citizen in 2007. Chemirmir failed to complete this process.

Hundreds of bodies

Shockingly, Texas police officers are looking into Chemirmir's connection to at least 750 elderly deaths in the greater Dallas area.

A tip line, (972) 941-5785, has been set up in order to aid the police in this mammoth search. "It will be a monumental task. But we're up for the challenge and we're gonna make sure we check each and every case," said Dallas Police Department Executive Assistant Chief of Police David Pughes -- according to the New York Post.

One survivor from Frisco, Texas may have already provided police with Chemirmir's MO. According to this unnamed individual, Chemirmir came to her house on October 29, 2017. He knocked on her door and, while posing as a handyman, he asked the resident if they required any work around the house. When the resident said "No," Chemirmir forced his way into the home and used a pillow to try and suffocate the elderly woman. The only reason that she survived is because she managed to hit her personal emergency alert button.

Another survivor was similarly attacked in Plano on March 19, 2017. In this case, Chemirmir supposedly managed to choke the woman unconscious with the pillow, and she had to be resuscitated by firefighters.

Deadly legacy

Sadly, modern criminal history is replete with Serial Killer nurses [VIDEO]and doctors who targeted the sick and the elderly. In the United Kingdom, Dr. Harold Shipman, a general practitioner, may have killed over 250 patients between 1975 and 1998. American nurse Charles Cullen is widely believed to be the nation's deadliest serial killer, with a suspected body count somewhere around 400.

More recently, German nurse Niels Hogel confessed to killing thirty patients while he worked at two different hospitals in the Saxony region of Germany. Hogel's MO included giving his patients lethal doses of drugs, so that he could in turn resuscitate them. Hogel claims that he wanted to feel like a hero, but obviously his heroic attempts often failed.

Japan's Miyuki Ishikawa used her position as a midwife to murder over one hundred children. This case did much to change abortion laws in Japan.