The police and the FBI have launched a massive manhunt to find the assailants and the kidnappers.

"Saanvi Venna is believed to have been taken from her family's apartment after the murder of her grandmother, Satayvathi Venna, age 61, on Monday," Montgomery County District Attorney Risa Vetri Ferman said in a statement.

Pennsylvania State Police has issued an Amber Child Abduction Alert.

According to Ferman, the body of Satyavathi Venna, the paternal grandmother of Saanvi, was discovered inside the apartment.

Satyavathi had arrived from India for a visit in July and was scheduled to return home in January. She was babysitting the child.

The parents of the child, Venkata Konda Siva Venna (father) and Chenchu Latha Punuru (mother), had emigrated from India in February 2007 and have previously lived in San Antonio Texas, Troy Michigan, and Cleveland Ohio. In June this

year, they moved to King of Prussia in Pennsylvania.

An autopsy of the body of Satyavathi Venna is underway, Ferman said.

In a televised news conference, Venkata Konda Siva Venna, made a brief, emotional plea, asking help.

"If someone finds my baby, could you please bring my baby back?" he was quoted as saying by the Philly Inquirer.

According to the daily, the neighbours expressed shock at the incident.

"You always fear the worst," Veronica Nava, 36, who lives in the same complex, told the daily.

"I feel bad... for the guy who is looking for his daughter," said resident Tanya Bazylskiy, who lives in the C building.

She said the apartment had many young professionals and families living there, "good neighbours".

The Telugu Association of North America (TANA) today announced an award of USD 15,000 for information that leads to the arrest of the assailant and the kidnappers.

"On behalf of TANA, we announce USD 15,000 cash prize to anyone who can get any clues related to the case," said Prasad Thotakura, the TANA president.