They did not appear to have "obvious signs of death", but police believe both daughters were homicide victims.
The North Royalton Police Department identified two sisters as 18-year-old Kylie Pifer and 21-year-old Taylor Pifer. Stark County Sheriff George Maier says Brinkman's vehicle was seen in the driveway of Rogell and Roberta John's home after they returned from a vacation on Sunday.
The couple had been in the neighborhood of one- and two-story brick and clapboard houses for decades and were nice but kept to themselves, said Taylor Brown, 24, a neighbor of the Johns' in North Canton, Ohio. They say a woman who was in the house with the suspect during the eight-hour-plus standoff left unharmed.
Loeding said Tuesday that, while Brinkman is the suspect in the North Royalton case, he has not yet been charged.
Stark County issued murder warrants for Brinkman's arrest Tuesday morning.
A 911 recording was released by OH police on Monday after a family of two college students and their mother were killed in their home.
The women were found dead in a bedroom of their North Royalton home Sunday evening, police said.
Amazon to buy Whole Foods for $13.7 billion
Whole Foods Market, which has more than 420 stores in more than 40 states in the US , soared more than 29.1 percent to $42.68. Excluding debt, the deal is valued at $13.39 billion, based on 318.9 million diluted shares outstanding as of April 9.
Longtime friend Rhonda Whitelock is hurt by the sudden loss of Suzanne and her two young daughters.
The encounter began around 9 p.m. Monday at a Brunswick, Ohio, home, the Brunswick Division of Police said in a news conference Tuesday morning. Police say the women may have died a day before their bodies were found.
Authorities used a Taser to take Brinkman into custody, Brunswick police Lt. Robert Safran told local TV station WJW.
Although an unidentified woman was reportedly inside the house with the suspect, she also escaped the home without injury.
Stark County Sheriff George Maier said Brinkman worked for the couple.
He was jailed from October 18, 1999 to March 2, 2000. In December 1999 he was charged again with forgery, theft and receiving stolen property and was sentenced to 11 months in prison in February 2000.
He was arrested Tuesday after an overnight standoff with police in Brunswick.