Deputies: Father armed with gun threatens to kill his baby, toddler in Miami-Dade

A 23-year-old father was armed with a gun when he recently threatened to kill his 4-month-old daughter and 1-year-old son in front of their mother in Miami-Dade County, according to a deputy’s arrest report.The mother told deputies Oswald Rosa pointed his gun in her direction, and grabbed their 1-year-old son “by the throat” while the family of four was in the car on Tuesday, according to the report. “I am going to kill them,” Rosa told the mother during an argument, according to the report. When Rosa got out of the car, the mother said she got in the driver’s seat and sped away before asking a good Samaritan to call 911 for help, according to the report. “The 1-year-old victim was observed with bruising on both sides of his throat,” a deputy wrote, according to the report. Miami-Dade Sheriff’s Office deputies reported Rosa, who was armed with a handgun, “admitted” to the threat, according to the report on his arrest at 1 p.m. on Tuesday in the area of Southwest 162nd Avenue and 81st T