Construction workers today ruptured a deep high- pressure gas line in unincorporated Otterbein just north of Rowland Heights, authorities said.

The breach of the 1-inch line near the intersection of South Nogales Street and Walnut Drive occurred around 2:50 a.m., said Los Angeles County Fire Department Dispatch Supervisor Kyle Sandford.

The main was buried about 12-15 feet deep, and an urban search and rescue team was dispatched to shore up the excavation before an attempt was made to repair the line, Sanford said.

No evacuations from the area were reported, he said.