Two persons died on Thursday and another was seriously injured after they jumped off the third floor of a building to escape attack by a pet dog in Visakhapatnam, police said.

Five workers were engaged in polishing of furniture in the third floor of an apartment in Lalithanagar area. A German shepherd dog belonging to the building owner, Narava Rambabu, who resides on the fourth floor, came to attack the workers.

In a bid to escape from the dog's attack, two of the workers bolted the door from inside, while the other three jumped to the ground from the apartment's balcony, police said, quoting eyewitnesses.

One of the workers C Gopi (28) died on the spot due to severe head injuries, while another Hussain Valli (43) succumbed to wounds while undergoing treatment at Kala hospital, they said.

The third one, B Srinivas, is undergoing treatment at the hospital and his condition is said to be stable, said BBS Ganesh, Sub-Inspector of Fourth Town Police Station.

All three were residents of Akkayyapalem area in the city.

No case has been filed yet in connection with the incident.

"We are verifying all the facts before registering a case," Ganesh said.

On the other end, the co-workers alleged it was a clear case of negligence on part of the dog owner and demanded police register a case against Rambabu.