The three-day event began on Thursday in the presence of Union Home Minister Rajnath Singh.
Before heading for the conference, Modi visited the Statue of Unity, the world's tallest statue, which he had unveiled on October 31.
The PM tweeted that the discussions at the DGPs/IGPs conference would strengthen the country's "security apparatus".
"Reached Kevadia in Gujarat
for the Conference of DGPs/IGPs. Looking forward to fruitful deliberations that will strengthen our security apparatus," he said in the tweet.
"Paid tributes to the great Sardar Patel
at the 'Statue of Unity.
' As India's Home Minister, his contribution towards building the framework of our security systems is immense," the PM added.
In another tweet, Modi urged the countrymen to visit the world's tallest statue.
"I would specially urge you all to visit Kevadia and see the 'Statue of Unity'. Some friends told me that the Statue can also be seen during Delhi-Mumbai
flights. So, next time you are flying that route do try to spot the Statue," Modi said in another tweet.
On Saturday, Modi is scheduled to address the BJP women's wing workers on the last day of a national
convention of the party's Mahila Morcha at Trimandir, a temple complex near Adalaj village in Gandhinagar.