A 5-month-old girl died Wednesday after she was found unresponsive in her Bronx home, police said.

Jayline Cervantes was found unconscious around 5:40 p.m. in a second-floor bedroom of E. 174th St. near St. Lawrence Ave. in Parkchester, according to authorities.

Cervantes' mother was at the pharmacy while her 13-year-old sister was babysitting, the New York Daily News reported. The sister told her mom that something was wrong.

The infant was taken to Jacobi Hospital where she was pronounced dead, according to police. 

The medical examiner will determine the cause of death.