Crews are battling a two-alarm blaze at a North San Jose mobile home park that has spread to three units, the San Jose Fire Department reported Saturday evening.

The primary unit in the 500 block of Hermitage Lane is “heavily involved,” but crews are making “good progress,” the department said on social media. Another unit has internal damage, while at the third unit, damage has been limited to a deck and fence.

“The fourth structure that was threatened had a fence catch fire but no structure damage,” the department posted.

No injuries were reported.

The fire was reported at 4:16 p.m., and crews were still on the scene as of 6 p.m.

Neighbors and drivers are advised to avoid the area.

This is a developing story. Come back for updates.