Israeli warplanes struck a Syrian military position overnight in response to rocket fire on the Israeli-annexed Golan Heights, the military said on Tuesday.
The cross-border fire came days after an airstrike blamed on Israel destroyed the Iranian consulate in Damascus, killing senior military commanders and raising regional tensions.
The Israeli military said that "warplanes attacked Syrian army military infrastructure overnight in the Mahajjah area" -- around 30 kilometres (20 miles) from the demilitarised zone separating the opposing forces, AFP reported.
The Israeli army said it identified a rocket launch from Syrian territory on Monday that caused no casualties. It said artillery struck the source of the fire.
Israel has raised its military readiness after last week's deadly strike on the Iranian consulate in Damascus drew threats of retaliation from Tehran.
The April 1 strike killed seven Iranian Revolutionary Guards, two of them generals.
The strike came with regional tensions already running high as Israel battles Hamas in Gaza and exchanges near-daily fire with its Lebanese ally Hezbollah.