Maxwell Lomas, who found Bobbi Kristina Brown unresponsive in a bathtub at her home in suburban Roswell, has been arrested several times in the past over drug-related incidents, according to media reports. Meanwhile, Brown’s family claimed that police found drugs at her residence when authorities went back for a second time to search the house, TMZ reported.

The 21-year-old daughter of Whitney Houston and Bobby Brown is now on ventilator after being placed in a medically induced coma and is struggling for her life. The aspiring starlet was found unconscious in the tub around 10:30 a.m. EST on Saturday by her husband Nick Gordon and a friend, now identified as Lomas, both of who reportedly began performing cardiopulmonary resuscitation before the paramedics arrived.

Lomas, 24, who is suspected of being Brown’s former boyfriend, had been arrested weeks earlier and was charged with possession of marijuana and a firearm or a knife, according to Mirror Online. He also attended a preliminary hearing on Friday -- a day before he was with Brown, Radar Online reported, citing court documents.

The news comes a day after reports surfaced that Brown had a restraining order against her husband after the two had a fight last week. Entertainment Tonight host Kevin Frazier said on “The Talk” that Gordon might have been involved in Brown's drowning.

“The family has always struggled and had a problem with Nick [Gordon],” Frazier reportedly said. “They feel he played a hand in this incident.” However, Brown's family has not stated publicly that Gordon had any involvement in the incident, and nor has police hinted Gordon as a person of interest in the case.

“This was not a suicide attempt. According to sources, there were drugs, even though no drugs were found at the scene,” he said. “Allegedly the two got into an argument. They had apparently been partying.”

Meanwhile, TMZ reported that sources close to the family claimed that police seized several items from Brown's house during the second search. Authorities failed to find anything during the first search as they were looking for items that were "out in the open," TMZ reported.

“Please allow for my family to deal with this matter and give my daughter the love and support she needs at this time,” Bobby Brown said, in a statement, requesting for privacy.