SHAKER HEIGHTS, Ohio — A couple and their twin teenage children were found dead in their home after authorities were asked to conduct a welfare check at the residence in a Cleveland suburb, authorities said.

Shaker Heights police went to the home around 2:20 p.m. Sunday and soon found Regina Tobin, 58; John Tobin, 57, and Natalie and Graham Tobin, both 15.

The Cuyahoga County Medical Examiner's Office announced Monday that Regina Tobin and the two children died in suspected homicides, but did not offer a manner of death for John Tobin. The causes of death for all four have not been released.

Further details on how and when the deaths may have occurred were not immediately disclosed.

Authorities did not say who asked for the welfare check or why it was sought. They said there was no forced entry into the home and no other injuries were reported.