A candlelight vigil has been held and a $30,000 reward is being offered as authorities search for a 10-month-old girl abducted from an apartment in a Philadelphia suburb where her grandmother was killed.

Investigators believe Saanvi Venna was taken sometime between 8 a.m. and 1 p.m. Monday from the King of Prussia apartment where the body of 61-year-old Satyavathi Venna, was found.

Law enforcement and community groups are offering $30,000 for information leading to the child's safe return.

Scores attended a candlelight vigil Wednesday night at which relatives prayed and pleaded for her return.

Police say the girl's parents immigrated from India in February 2007 and moved to the apartment in June. The grandmother arrived in July and was scheduled to return home in January.