A Bangladeshi woman has been allegedly "assaulted sexually" and killed in Bengaluru city of India, said police.

The woman, 28, who worked as a domestic help in Kalkere locality, was killed possibly on Thursday and her body was disposed of at Kalkere lake in Ramamurthy Nagar, Bengaluru police said.

Her body was recovered on Friday [January 24], said Ramesh Banoth, joint commissioner of police in Bengaluru East Division.

"It seems she had been sexually assaulted," he said, adding that a case under sections of murder and rape has been registered.

The Bangladeshi woman had been living in Bengaluru with her husband and three children for the past six years and had been doing housekeeping in an apartment, he said.

On Thursday, the woman left the apartment after finishing her work. However, she did not return home.

A team of forensic experts visited the scene and conducted an inspection.

Banoth said the woman's husband came to India legally. However, the victim entered the country illegally without a passport.

"Based on the complaint filed by her husband, we have registered a case of sexual assault and murder and are investigating," added the police official.

The body has been sent for postmortem.