Atlanta ( CNN ) Doctors treating Bobbi Kristina Brown , who remains in a medically induced coma , tried taking her off various medications , according to a source close to her family . They were forced to put her back on the drugs because she started having seizures , the source told CNN on Wednesday . Brown , daughter of the late star Whitney Houston , was found unresponsive in a bathtub on January 31 at her home in Roswell , Georgia . The extent of her injuries is not known . Last week , doctors removed her breathing tube , allowing Brown to be ventilated through a hole in her throat . At the time , CNN 's chief medical correspondent Dr. Sanjay Gupta said the move suggested she would need to be on such support for `` weeks and months to come , as opposed to hours and days . '' Police have said they 're treating Brown 's case as a criminal investigation . Her mother , who died in 2012 , was similarly found in a bathtub . A coroner ruled Houston 's death an accidental drowning , with heart disease and cocaine use listed as contributing factors . Brown , 21 , is her only child .
Bobbi Kristina Brown has seizures after doctors take her off medication , source says . The teen was found unresponsive in a bathtub at the singer's home on June 18 and later pronounced dead.